/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 23:58:42,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 23:58:42,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 23:58:42,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 23:58:42,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 23:58:42,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 23:58:42,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 23:58:42,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 23:58:42,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 23:58:42,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 23:58:42,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 23:58:42,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 23:58:42,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 23:58:42,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 23:58:42,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 23:58:42,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 23:58:42,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 23:58:42,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 23:58:42,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 23:58:42,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 23:58:42,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 23:58:42,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 23:58:42,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 23:58:42,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 23:58:42,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 23:58:42,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 23:58:42,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 23:58:42,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 23:58:42,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 23:58:42,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 23:58:42,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 23:58:42,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 23:58:42,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 23:58:42,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 23:58:42,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 23:58:42,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 23:58:42,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 23:58:42,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 23:58:42,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 23:58:42,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 23:58:42,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 23:58:42,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 23:58:42,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 23:58:42,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 23:58:42,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 23:58:42,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 23:58:42,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 23:58:42,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 23:58:42,541 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 23:58:42,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 23:58:42,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 23:58:42,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 23:58:42,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 23:58:42,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 23:58:42,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 23:58:42,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 23:58:42,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 23:58:42,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 23:58:42,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 23:58:42,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 23:58:42,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 23:58:42,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 23:58:42,833 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 23:58:42,833 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 23:58:42,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl [2021-06-05 23:58:42,834 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl' [2021-06-05 23:58:42,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 23:58:42,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 23:58:42,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 23:58:42,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 23:58:42,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 23:58:42,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 23:58:42,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 23:58:42,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 23:58:42,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 23:58:42,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... [2021-06-05 23:58:42,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 23:58:42,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 23:58:42,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 23:58:42,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 23:58:42,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 23:58:42,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 23:58:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 23:58:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 23:58:42,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 23:58:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 23:58:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 23:58:42,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 23:58:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 23:58:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 23:58:42,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 23:58:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 23:58:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 23:58:42,942 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 23:58:43,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 23:58:43,138 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 23:58:43,139 INFO L202 PluginConnector]: Adding new model max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 11:58:43 BoogieIcfgContainer [2021-06-05 23:58:43,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 23:58:43,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 23:58:43,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 23:58:43,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 23:58:43,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:58:42" (1/2) ... [2021-06-05 23:58:43,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711a2aea and model type max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 11:58:43, skipping insertion in model container [2021-06-05 23:58:43,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 11:58:43" (2/2) ... [2021-06-05 23:58:43,158 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array.wvr.bpl [2021-06-05 23:58:43,162 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 23:58:43,162 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 23:58:43,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 23:58:43,163 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 23:58:43,217 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 23:58:43,237 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 23:58:43,261 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 23:58:43,262 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 23:58:43,262 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 23:58:43,262 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 23:58:43,262 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 23:58:43,262 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 23:58:43,262 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 23:58:43,262 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 23:58:43,268 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 23:58:43,295 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 23:58:43,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:43,306 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:43,306 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash -520695315, now seen corresponding path program 1 times [2021-06-05 23:58:43,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:43,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360074823] [2021-06-05 23:58:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:43,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:43,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360074823] [2021-06-05 23:58:43,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360074823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 23:58:43,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 23:58:43,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 23:58:43,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505937626] [2021-06-05 23:58:43,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 23:58:43,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 23:58:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 23:58:43,481 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:43,527 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 23:58:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 23:58:43,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 23:58:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:43,536 INFO L225 Difference]: With dead ends: 217 [2021-06-05 23:58:43,536 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 23:58:43,537 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 23:58:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 23:58:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 23:58:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 23:58:43,585 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 23:58:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:43,585 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 23:58:43,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 23:58:43,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 23:58:43,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:43,590 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:43,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 23:58:43,591 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:43,591 INFO L82 PathProgramCache]: Analyzing trace with hash -411683507, now seen corresponding path program 1 times [2021-06-05 23:58:43,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:43,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995596053] [2021-06-05 23:58:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:58:43,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:43,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995596053] [2021-06-05 23:58:43,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995596053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 23:58:43,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 23:58:43,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 23:58:43,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537395297] [2021-06-05 23:58:43,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 23:58:43,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:43,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 23:58:43,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 23:58:43,641 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:43,670 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 23:58:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 23:58:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 23:58:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:43,671 INFO L225 Difference]: With dead ends: 158 [2021-06-05 23:58:43,672 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 23:58:43,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 23:58:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 23:58:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 23:58:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 23:58:43,680 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 23:58:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:43,681 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 23:58:43,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 23:58:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 23:58:43,682 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:43,682 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:43,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 23:58:43,682 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1197401099, now seen corresponding path program 1 times [2021-06-05 23:58:43,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:43,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748629939] [2021-06-05 23:58:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:58:43,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:43,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748629939] [2021-06-05 23:58:43,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748629939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 23:58:43,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 23:58:43,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 23:58:43,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143619142] [2021-06-05 23:58:43,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 23:58:43,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:43,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 23:58:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 23:58:43,728 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:43,774 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 23:58:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 23:58:43,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 23:58:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:43,775 INFO L225 Difference]: With dead ends: 183 [2021-06-05 23:58:43,775 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 23:58:43,776 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 23:58:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 23:58:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 23:58:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 23:58:43,787 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 23:58:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:43,787 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 23:58:43,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 23:58:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:58:43,789 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:43,789 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:43,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 23:58:43,789 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1416433813, now seen corresponding path program 1 times [2021-06-05 23:58:43,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:43,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879453175] [2021-06-05 23:58:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:44,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:44,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879453175] [2021-06-05 23:58:44,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879453175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:44,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265422799] [2021-06-05 23:58:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:44,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 23:58:44,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:44,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:58:44,440 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:44,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:58:44,444 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:44,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:58:44,448 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:44,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:44,458 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:58:44,458 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:91, output treesize:15 [2021-06-05 23:58:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:44,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265422799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:44,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:44,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:58:44,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254229321] [2021-06-05 23:58:44,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:58:44,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:44,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:58:44,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:58:44,487 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:44,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:44,717 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 23:58:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 23:58:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 23:58:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:44,722 INFO L225 Difference]: With dead ends: 330 [2021-06-05 23:58:44,722 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 23:58:44,723 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 334.8ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:58:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 23:58:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 23:58:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 23:58:44,752 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 23:58:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:44,752 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 23:58:44,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 23:58:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:58:44,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:44,754 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:44,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:44,955 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1584242905, now seen corresponding path program 2 times [2021-06-05 23:58:44,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:44,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281749562] [2021-06-05 23:58:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:45,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:45,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281749562] [2021-06-05 23:58:45,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281749562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:45,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008856868] [2021-06-05 23:58:45,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:45,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:45,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 23:58:45,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:45,489 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:45,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 23:58:45,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:45,508 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:45,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 23:58:45,510 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:45,518 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:45,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 23:58:45,520 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:45,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:45,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 23:58:45,530 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:45,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:45,579 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:58:45,580 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:124, output treesize:114 [2021-06-05 23:58:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:45,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008856868] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:45,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:45,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 23:58:45,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560884147] [2021-06-05 23:58:45,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 23:58:45,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:45,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 23:58:45,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 23:58:45,694 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:46,295 INFO L93 Difference]: Finished difference Result 406 states and 1173 transitions. [2021-06-05 23:58:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 23:58:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 23:58:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:46,298 INFO L225 Difference]: With dead ends: 406 [2021-06-05 23:58:46,298 INFO L226 Difference]: Without dead ends: 391 [2021-06-05 23:58:46,299 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 691.7ms TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:58:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-06-05 23:58:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 229. [2021-06-05 23:58:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 23:58:46,321 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 23:58:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:46,321 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 23:58:46,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 23:58:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:58:46,323 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:46,323 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:46,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:46,524 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:46,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1285469457, now seen corresponding path program 3 times [2021-06-05 23:58:46,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:46,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396362656] [2021-06-05 23:58:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:46,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:46,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396362656] [2021-06-05 23:58:46,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396362656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:46,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672278006] [2021-06-05 23:58:46,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:46,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 23:58:46,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:46,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 23:58:46,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:46,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:58:46,771 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:46,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:58:46,774 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:46,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:58:46,777 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:46,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:46,784 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:58:46,784 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:67, output treesize:15 [2021-06-05 23:58:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:46,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672278006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:46,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:46,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 23:58:46,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274937244] [2021-06-05 23:58:46,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:58:46,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:58:46,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:58:46,818 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:46,952 INFO L93 Difference]: Finished difference Result 363 states and 1038 transitions. [2021-06-05 23:58:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 23:58:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 23:58:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:46,954 INFO L225 Difference]: With dead ends: 363 [2021-06-05 23:58:46,955 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 23:58:46,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 193.6ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-06-05 23:58:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 23:58:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 241. [2021-06-05 23:58:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 23:58:46,961 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 23:58:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:46,961 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 23:58:46,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 23:58:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:58:46,962 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:46,962 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:47,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:47,181 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:47,181 INFO L82 PathProgramCache]: Analyzing trace with hash 285356143, now seen corresponding path program 4 times [2021-06-05 23:58:47,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:47,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949934689] [2021-06-05 23:58:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:47,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949934689] [2021-06-05 23:58:47,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949934689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739186457] [2021-06-05 23:58:47,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:47,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:58:47,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:47,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 23:58:47,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:47,459 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:47,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 23:58:47,461 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 23:58:47,470 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,523 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:47,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 23:58:47,525 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 23:58:47,536 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,576 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 23:58:47,576 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:71 [2021-06-05 23:58:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:47,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739186457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:47,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:47,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:58:47,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701424794] [2021-06-05 23:58:47,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:47,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:47,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:47,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:47,660 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:47,976 INFO L93 Difference]: Finished difference Result 425 states and 1233 transitions. [2021-06-05 23:58:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 23:58:47,977 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 23:58:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:47,979 INFO L225 Difference]: With dead ends: 425 [2021-06-05 23:58:47,979 INFO L226 Difference]: Without dead ends: 410 [2021-06-05 23:58:47,979 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 352.7ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:58:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-06-05 23:58:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 247. [2021-06-05 23:58:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 23:58:47,985 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 23:58:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:47,985 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 23:58:47,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 23:58:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:47,986 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:47,986 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:48,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:48,201 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash -703639479, now seen corresponding path program 5 times [2021-06-05 23:58:48,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:48,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887201530] [2021-06-05 23:58:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:48,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:48,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887201530] [2021-06-05 23:58:48,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887201530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:48,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057199003] [2021-06-05 23:58:48,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:48,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:58:48,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:48,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:48,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057199003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:48,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:48,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:58:48,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645744526] [2021-06-05 23:58:48,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:58:48,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:48,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:58:48,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:58:48,374 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:48,674 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 23:58:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 23:58:48,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:48,679 INFO L225 Difference]: With dead ends: 619 [2021-06-05 23:58:48,679 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 23:58:48,680 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:58:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 23:58:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 23:58:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 23:58:48,687 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 23:58:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:48,687 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 23:58:48,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 23:58:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:48,688 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:48,688 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:48,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:48,901 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:48,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1679958323, now seen corresponding path program 6 times [2021-06-05 23:58:48,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:48,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822785665] [2021-06-05 23:58:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:48,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:48,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822785665] [2021-06-05 23:58:48,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822785665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:48,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312995242] [2021-06-05 23:58:48,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:48,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:58:48,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:48,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:48,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:49,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312995242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:49,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:49,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:58:49,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449328526] [2021-06-05 23:58:49,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:49,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:49,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:49,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:49,039 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:49,675 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 23:58:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 23:58:49,676 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:49,679 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 23:58:49,679 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 23:58:49,680 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 410.4ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:58:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 23:58:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 23:58:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 23:58:49,690 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 23:58:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:49,691 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 23:58:49,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 23:58:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:49,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:49,691 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:49,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:49,905 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1113006243, now seen corresponding path program 7 times [2021-06-05 23:58:49,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:49,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970587994] [2021-06-05 23:58:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:49,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:49,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970587994] [2021-06-05 23:58:49,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970587994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:49,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893232600] [2021-06-05 23:58:49,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:49,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:49,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:50,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893232600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:50,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:50,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:58:50,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298378217] [2021-06-05 23:58:50,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:50,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:50,047 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:50,626 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 23:58:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 23:58:50,631 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:50,635 INFO L225 Difference]: With dead ends: 951 [2021-06-05 23:58:50,635 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 23:58:50,635 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 385.4ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 23:58:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 23:58:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 23:58:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 23:58:50,644 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 23:58:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:50,645 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 23:58:50,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 23:58:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:50,645 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:50,645 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:50,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:50,861 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash -176867571, now seen corresponding path program 1 times [2021-06-05 23:58:50,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:50,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877042399] [2021-06-05 23:58:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:58:50,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:50,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877042399] [2021-06-05 23:58:50,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877042399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:50,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436417703] [2021-06-05 23:58:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:50,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 23:58:50,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:58:50,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436417703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:50,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:50,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 23:58:50,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905333379] [2021-06-05 23:58:50,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 23:58:50,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:50,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 23:58:50,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 23:58:50,976 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:51,062 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 23:58:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 23:58:51,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:51,069 INFO L225 Difference]: With dead ends: 669 [2021-06-05 23:58:51,069 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 23:58:51,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:51,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 23:58:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 23:58:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 23:58:51,078 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 23:58:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:51,078 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 23:58:51,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 23:58:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:51,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:51,079 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:51,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-06-05 23:58:51,293 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash -613836279, now seen corresponding path program 8 times [2021-06-05 23:58:51,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:51,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608007181] [2021-06-05 23:58:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:51,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:51,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608007181] [2021-06-05 23:58:51,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608007181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:51,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894184306] [2021-06-05 23:58:51,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:51,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:51,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:51,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:51,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:51,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894184306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:51,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:51,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 23:58:51,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072613191] [2021-06-05 23:58:51,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:51,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:51,436 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:51,594 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 23:58:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 23:58:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:51,597 INFO L225 Difference]: With dead ends: 710 [2021-06-05 23:58:51,597 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 23:58:51,597 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:58:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 23:58:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 23:58:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 23:58:51,608 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 23:58:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:51,608 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 23:58:51,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 23:58:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:51,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:51,609 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:51,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:51,828 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1319793611, now seen corresponding path program 2 times [2021-06-05 23:58:51,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:51,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561771397] [2021-06-05 23:58:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:58:51,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:51,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561771397] [2021-06-05 23:58:51,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561771397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:51,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965940960] [2021-06-05 23:58:51,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:51,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:51,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 23:58:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:58:51,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965940960] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:51,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:51,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 23:58:51,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385697619] [2021-06-05 23:58:51,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 23:58:51,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 23:58:51,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 23:58:51,957 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:52,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:52,045 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 23:58:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 23:58:52,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:52,048 INFO L225 Difference]: With dead ends: 830 [2021-06-05 23:58:52,048 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 23:58:52,049 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 23:58:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 23:58:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 23:58:52,060 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 23:58:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:52,060 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 23:58:52,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 23:58:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:52,061 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:52,061 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:52,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:52,278 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:52,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1628492119, now seen corresponding path program 9 times [2021-06-05 23:58:52,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:52,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096974575] [2021-06-05 23:58:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:52,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:52,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096974575] [2021-06-05 23:58:52,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096974575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:52,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627386547] [2021-06-05 23:58:52,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:52,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:58:52,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:52,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:52,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627386547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:52,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:52,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:58:52,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649404278] [2021-06-05 23:58:52,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:58:52,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:52,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:58:52,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:58:52,406 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:52,679 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 23:58:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 23:58:52,680 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:52,684 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 23:58:52,684 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 23:58:52,685 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 189.9ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:58:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 23:58:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 23:58:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 23:58:52,698 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 23:58:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:52,698 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 23:58:52,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 23:58:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:52,699 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:52,699 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:52,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 23:58:52,916 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1881561083, now seen corresponding path program 10 times [2021-06-05 23:58:52,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:52,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495018296] [2021-06-05 23:58:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:52,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:52,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495018296] [2021-06-05 23:58:52,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495018296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:52,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960509918] [2021-06-05 23:58:52,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:52,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:58:52,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:52,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:52,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:53,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960509918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:53,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:53,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:58:53,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869112552] [2021-06-05 23:58:53,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:58:53,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:53,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:58:53,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:58:53,035 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:53,381 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 23:58:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 23:58:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:53,386 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 23:58:53,386 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 23:58:53,387 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 215.8ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 23:58:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 23:58:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 23:58:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 23:58:53,402 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 23:58:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:53,402 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 23:58:53,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 23:58:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:53,403 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:53,403 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:53,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 23:58:53,617 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:53,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:53,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1330383557, now seen corresponding path program 11 times [2021-06-05 23:58:53,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:53,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117729985] [2021-06-05 23:58:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:53,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:53,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117729985] [2021-06-05 23:58:53,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117729985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:53,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877962741] [2021-06-05 23:58:53,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:53,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:53,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:53,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:53,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:53,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877962741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:53,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:53,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 23:58:53,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93189553] [2021-06-05 23:58:53,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:53,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:53,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:53,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:53,761 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:54,019 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 23:58:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:58:54,020 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:54,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:54,032 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 23:58:54,033 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 23:58:54,033 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:58:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 23:58:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 23:58:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 23:58:54,047 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 23:58:54,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:54,047 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 23:58:54,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 23:58:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:54,049 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:54,049 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:54,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 23:58:54,265 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1493505621, now seen corresponding path program 12 times [2021-06-05 23:58:54,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:54,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600257581] [2021-06-05 23:58:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:54,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:54,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600257581] [2021-06-05 23:58:54,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600257581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:54,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115697727] [2021-06-05 23:58:54,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:54,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:58:54,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:54,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:54,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:54,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115697727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:54,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:54,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 23:58:54,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580012969] [2021-06-05 23:58:54,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:54,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:54,395 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:54,634 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 23:58:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 23:58:54,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:54,638 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 23:58:54,638 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 23:58:54,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:58:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 23:58:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 23:58:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 23:58:54,653 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 23:58:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:54,653 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 23:58:54,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 23:58:54,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:54,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:54,654 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:54,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:54,865 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:54,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:54,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1926382225, now seen corresponding path program 13 times [2021-06-05 23:58:54,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:54,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654588225] [2021-06-05 23:58:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:54,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:54,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654588225] [2021-06-05 23:58:54,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654588225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:54,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152942998] [2021-06-05 23:58:54,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:54,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:54,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:54,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152942998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:54,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:54,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:58:54,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471520306] [2021-06-05 23:58:54,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:58:54,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:54,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:58:54,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:58:54,974 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:55,280 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 23:58:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 23:58:55,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:55,285 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 23:58:55,285 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 23:58:55,285 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 178.7ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:58:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 23:58:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 23:58:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 23:58:55,301 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 23:58:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:55,301 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 23:58:55,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 23:58:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:55,303 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:55,303 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:55,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:55,521 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2096575881, now seen corresponding path program 14 times [2021-06-05 23:58:55,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:55,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802349263] [2021-06-05 23:58:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:55,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:55,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802349263] [2021-06-05 23:58:55,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802349263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:55,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603239415] [2021-06-05 23:58:55,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:55,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:55,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:55,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:55,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:55,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603239415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:55,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:55,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:58:55,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147373572] [2021-06-05 23:58:55,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:55,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:55,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:55,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:55,654 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:56,308 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 23:58:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 23:58:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:56,319 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 23:58:56,320 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 23:58:56,320 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 393.8ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:58:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 23:58:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 23:58:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 23:58:56,344 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 23:58:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:56,344 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 23:58:56,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 23:58:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:56,346 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:56,346 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:56,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:56,557 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1631439335, now seen corresponding path program 15 times [2021-06-05 23:58:56,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:56,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657904944] [2021-06-05 23:58:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:56,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:56,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657904944] [2021-06-05 23:58:56,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657904944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:56,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380655046] [2021-06-05 23:58:56,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 23:58:56,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:58:56,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:56,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:56,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380655046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:56,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:56,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:58:56,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482569914] [2021-06-05 23:58:56,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:56,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:56,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:56,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:56,694 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:57,320 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 23:58:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 23:58:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:57,326 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 23:58:57,326 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 23:58:57,326 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 386.1ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:58:57,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 23:58:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 23:58:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 23:58:57,349 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 23:58:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:57,349 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 23:58:57,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 23:58:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:57,350 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:57,350 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:57,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:57,565 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1491182103, now seen corresponding path program 16 times [2021-06-05 23:58:57,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:57,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364345794] [2021-06-05 23:58:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:57,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:57,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364345794] [2021-06-05 23:58:57,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364345794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:57,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522948013] [2021-06-05 23:58:57,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:57,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:58:57,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:57,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:57,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:57,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522948013] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:57,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:57,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:58:57,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353831004] [2021-06-05 23:58:57,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:58:57,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:57,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:58:57,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:58:57,702 INFO L87 Difference]: Start difference. First operand 831 states and 2730 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:58,252 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 23:58:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 23:58:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:58,257 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 23:58:58,257 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 23:58:58,258 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 326.3ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 23:58:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 23:58:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 23:58:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 23:58:58,279 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 23:58:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:58,279 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 23:58:58,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 23:58:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:58,281 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:58,281 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:58,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-06-05 23:58:58,493 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:58,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:58,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1572558191, now seen corresponding path program 17 times [2021-06-05 23:58:58,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:58,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495775072] [2021-06-05 23:58:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:58,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:58,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495775072] [2021-06-05 23:58:58,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495775072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:58,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880597496] [2021-06-05 23:58:58,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:58,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 23:58:58,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:58,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:58,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:58,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880597496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:58,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:58,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:58:58,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942896705] [2021-06-05 23:58:58,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:58:58,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:58,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:58:58,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:58:58,615 INFO L87 Difference]: Start difference. First operand 845 states and 2785 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:59,122 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 23:58:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 23:58:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:58:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:59,126 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 23:58:59,126 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 23:58:59,127 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 290.2ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:58:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 23:58:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 23:58:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 23:58:59,149 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 23:58:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:59,149 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 23:58:59,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 23:58:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:58:59,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:59,150 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:58:59,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:59,357 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:59,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:59,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1791751889, now seen corresponding path program 18 times [2021-06-05 23:58:59,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:59,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816588979] [2021-06-05 23:58:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:59,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:59,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816588979] [2021-06-05 23:58:59,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816588979] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:59,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10631824] [2021-06-05 23:58:59,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 23:58:59,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 23:58:59,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:59,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:58:59,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:58:59,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10631824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:59,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:59,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:58:59,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517142563] [2021-06-05 23:58:59,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:58:59,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:59,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:58:59,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:58:59,494 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:00,070 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 23:59:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 23:59:00,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:00,075 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 23:59:00,075 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 23:59:00,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 329.1ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 23:59:00,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 23:59:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 23:59:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 23:59:00,100 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 23:59:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:00,100 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 23:59:00,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 23:59:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:00,105 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:00,105 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:00,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 23:59:00,321 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash -148712735, now seen corresponding path program 19 times [2021-06-05 23:59:00,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:00,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448055240] [2021-06-05 23:59:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:00,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:00,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448055240] [2021-06-05 23:59:00,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448055240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:00,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414900182] [2021-06-05 23:59:00,359 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:00,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:00,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414900182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:00,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:00,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:00,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713493623] [2021-06-05 23:59:00,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:00,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:00,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:00,453 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:01,010 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 23:59:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 23:59:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:01,014 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 23:59:01,014 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 23:59:01,015 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 340.5ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:59:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 23:59:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 23:59:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 23:59:01,034 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 23:59:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:01,034 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 23:59:01,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 23:59:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:01,036 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:01,036 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:01,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 23:59:01,249 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1060998287, now seen corresponding path program 3 times [2021-06-05 23:59:01,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:01,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211340403] [2021-06-05 23:59:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:59:01,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:01,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211340403] [2021-06-05 23:59:01,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211340403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:01,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138330306] [2021-06-05 23:59:01,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:01,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 23:59:01,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:01,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 23:59:01,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:59:01,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138330306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:01,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:01,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 23:59:01,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531412323] [2021-06-05 23:59:01,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 23:59:01,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:01,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 23:59:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 23:59:01,344 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:01,420 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 23:59:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 23:59:01,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:01,434 INFO L225 Difference]: With dead ends: 929 [2021-06-05 23:59:01,434 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 23:59:01,434 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:59:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 23:59:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 23:59:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 23:59:01,455 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 23:59:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:01,455 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 23:59:01,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 23:59:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:01,457 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:01,457 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:01,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:01,674 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -130798543, now seen corresponding path program 20 times [2021-06-05 23:59:01,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:01,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028382162] [2021-06-05 23:59:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:01,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:01,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028382162] [2021-06-05 23:59:01,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028382162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:01,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325357601] [2021-06-05 23:59:01,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:01,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:01,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:01,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:01,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325357601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:01,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:01,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 23:59:01,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108204490] [2021-06-05 23:59:01,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 23:59:01,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:01,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 23:59:01,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 23:59:01,779 INFO L87 Difference]: Start difference. First operand 780 states and 2573 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:02,013 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 23:59:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 23:59:02,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:02,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:02,016 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 23:59:02,016 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 23:59:02,016 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:59:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 23:59:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 23:59:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 23:59:02,029 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 23:59:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:02,030 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 23:59:02,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 23:59:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:02,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:02,031 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:02,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 23:59:02,247 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1771880909, now seen corresponding path program 21 times [2021-06-05 23:59:02,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:02,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296737913] [2021-06-05 23:59:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:02,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:02,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296737913] [2021-06-05 23:59:02,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296737913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:02,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917987037] [2021-06-05 23:59:02,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:02,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:02,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:02,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:02,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:02,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917987037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:02,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:02,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 23:59:02,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945233413] [2021-06-05 23:59:02,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 23:59:02,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:02,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 23:59:02,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 23:59:02,343 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:02,574 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 23:59:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 23:59:02,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:02,577 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 23:59:02,577 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 23:59:02,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:59:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 23:59:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 23:59:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 23:59:02,590 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 23:59:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:02,590 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 23:59:02,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 23:59:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:02,592 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:02,592 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:02,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:02,801 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1727059767, now seen corresponding path program 22 times [2021-06-05 23:59:02,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:02,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410662058] [2021-06-05 23:59:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:59:02,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:02,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410662058] [2021-06-05 23:59:02,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410662058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:02,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474332055] [2021-06-05 23:59:02,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:02,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:02,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:02,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:02,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 23:59:02,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474332055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:02,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:02,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 23:59:02,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972441306] [2021-06-05 23:59:02,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 23:59:02,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:02,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 23:59:02,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 23:59:02,891 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:03,050 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 23:59:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 23:59:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:03,052 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 23:59:03,053 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 23:59:03,053 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 23:59:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 23:59:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 23:59:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 23:59:03,066 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 23:59:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:03,066 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 23:59:03,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 23:59:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:03,067 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:03,067 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:03,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-06-05 23:59:03,273 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1970570871, now seen corresponding path program 23 times [2021-06-05 23:59:03,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:03,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758517338] [2021-06-05 23:59:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:03,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:03,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758517338] [2021-06-05 23:59:03,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758517338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:03,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47102011] [2021-06-05 23:59:03,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:03,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:03,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:03,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:03,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:03,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47102011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:03,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:03,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 23:59:03,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233722224] [2021-06-05 23:59:03,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 23:59:03,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:03,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 23:59:03,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 23:59:03,368 INFO L87 Difference]: Start difference. First operand 896 states and 2943 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:03,556 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 23:59:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:59:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:03,558 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 23:59:03,558 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 23:59:03,559 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 23:59:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 23:59:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 23:59:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 23:59:03,572 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 23:59:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:03,572 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 23:59:03,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 23:59:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:03,574 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:03,574 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:03,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:03,781 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:03,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1797976141, now seen corresponding path program 24 times [2021-06-05 23:59:03,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:03,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204822535] [2021-06-05 23:59:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:03,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:03,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204822535] [2021-06-05 23:59:03,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204822535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:03,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394583346] [2021-06-05 23:59:03,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:03,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:03,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:03,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:03,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:03,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394583346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:03,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:03,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:03,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532988557] [2021-06-05 23:59:03,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:03,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:03,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:03,921 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:04,368 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 23:59:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 23:59:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:04,371 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 23:59:04,371 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 23:59:04,372 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 282.9ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 23:59:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 23:59:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 23:59:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 23:59:04,390 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 23:59:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:04,390 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 23:59:04,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 23:59:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:04,391 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:04,392 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:04,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-05 23:59:04,595 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1930039075, now seen corresponding path program 25 times [2021-06-05 23:59:04,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:04,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550139382] [2021-06-05 23:59:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:04,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:04,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550139382] [2021-06-05 23:59:04,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550139382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:04,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054257725] [2021-06-05 23:59:04,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:04,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:04,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:04,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054257725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:04,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:04,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:04,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238060504] [2021-06-05 23:59:04,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:04,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:04,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:04,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:04,716 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:05,182 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 23:59:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 23:59:05,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:05,185 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 23:59:05,185 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 23:59:05,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 298.8ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 23:59:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 23:59:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 23:59:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 23:59:05,203 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 23:59:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:05,204 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 23:59:05,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 23:59:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:05,205 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:05,205 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:05,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:05,417 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1192582363, now seen corresponding path program 26 times [2021-06-05 23:59:05,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:05,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855791886] [2021-06-05 23:59:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:05,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:05,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855791886] [2021-06-05 23:59:05,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855791886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:05,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515569620] [2021-06-05 23:59:05,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:05,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:05,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:05,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:05,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515569620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:05,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:05,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:59:05,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651365327] [2021-06-05 23:59:05,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:59:05,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:59:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:59:05,549 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:05,910 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 23:59:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 23:59:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:05,914 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 23:59:05,914 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 23:59:05,914 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 229.8ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 23:59:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 23:59:05,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 23:59:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 23:59:05,932 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 23:59:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:05,932 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 23:59:05,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 23:59:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:05,933 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:05,933 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:06,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 23:59:06,137 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1273958451, now seen corresponding path program 27 times [2021-06-05 23:59:06,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:06,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671215037] [2021-06-05 23:59:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:06,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:06,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671215037] [2021-06-05 23:59:06,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671215037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:06,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724603750] [2021-06-05 23:59:06,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:06,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:06,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:06,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:06,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:06,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724603750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:06,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:06,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:59:06,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890949709] [2021-06-05 23:59:06,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:59:06,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:06,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:59:06,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:59:06,255 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:06,579 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 23:59:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 23:59:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:06,582 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 23:59:06,582 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 23:59:06,582 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 196.1ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:59:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 23:59:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 23:59:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 23:59:06,598 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 23:59:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:06,598 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 23:59:06,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 23:59:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:06,600 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:06,600 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:06,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:06,801 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2090351629, now seen corresponding path program 28 times [2021-06-05 23:59:06,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:06,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630685967] [2021-06-05 23:59:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:06,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:06,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630685967] [2021-06-05 23:59:06,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630685967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:06,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123039428] [2021-06-05 23:59:06,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:06,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:06,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:06,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:06,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:06,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123039428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:06,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:06,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:06,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091300177] [2021-06-05 23:59:06,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:06,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:06,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:06,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:06,944 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:07,315 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 23:59:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 23:59:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:07,318 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 23:59:07,318 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 23:59:07,318 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 238.1ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 23:59:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 23:59:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 23:59:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 23:59:07,335 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 23:59:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:07,335 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 23:59:07,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 23:59:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:07,336 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:07,336 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:07,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 23:59:07,537 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:07,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash -447312475, now seen corresponding path program 29 times [2021-06-05 23:59:07,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:07,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279472633] [2021-06-05 23:59:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:07,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:07,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279472633] [2021-06-05 23:59:07,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279472633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:07,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412428088] [2021-06-05 23:59:07,569 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:07,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:07,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:07,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:07,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:07,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412428088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:07,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:07,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:07,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583570124] [2021-06-05 23:59:07,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:07,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:07,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:07,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:07,664 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:08,001 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 23:59:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 23:59:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:08,004 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 23:59:08,004 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 23:59:08,004 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 221.5ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:59:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 23:59:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 23:59:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 23:59:08,021 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 23:59:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:08,021 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 23:59:08,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 23:59:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:08,022 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:08,023 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:08,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-06-05 23:59:08,237 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash 556115509, now seen corresponding path program 30 times [2021-06-05 23:59:08,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:08,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265688688] [2021-06-05 23:59:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:08,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:08,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265688688] [2021-06-05 23:59:08,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265688688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:08,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821887745] [2021-06-05 23:59:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:08,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:08,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:08,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:08,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:08,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821887745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:08,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:08,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:59:08,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127192491] [2021-06-05 23:59:08,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:59:08,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:08,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:59:08,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:59:08,349 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:08,645 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 23:59:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 23:59:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:08,648 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 23:59:08,648 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 23:59:08,648 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 180.8ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 23:59:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 23:59:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 23:59:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 23:59:08,665 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 23:59:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:08,665 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 23:59:08,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 23:59:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:08,667 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:08,667 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:08,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-05 23:59:08,867 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:08,868 INFO L82 PathProgramCache]: Analyzing trace with hash 637491597, now seen corresponding path program 31 times [2021-06-05 23:59:08,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:08,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490027333] [2021-06-05 23:59:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:08,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:08,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490027333] [2021-06-05 23:59:08,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490027333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:08,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742509925] [2021-06-05 23:59:08,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:09,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:09,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:09,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742509925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:09,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:09,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:59:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180044552] [2021-06-05 23:59:09,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:59:09,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:59:09,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:59:09,070 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:09,317 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 23:59:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 23:59:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:09,320 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 23:59:09,320 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 23:59:09,320 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 151.8ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 23:59:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 23:59:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 23:59:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 23:59:09,336 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 23:59:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:09,337 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 23:59:09,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 23:59:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:09,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:09,338 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:09,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 23:59:09,561 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:09,561 INFO L82 PathProgramCache]: Analyzing trace with hash -877600375, now seen corresponding path program 32 times [2021-06-05 23:59:09,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:09,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271287409] [2021-06-05 23:59:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:09,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:09,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271287409] [2021-06-05 23:59:09,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271287409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:09,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139596868] [2021-06-05 23:59:09,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:09,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:09,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:09,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:09,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:09,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139596868] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:09,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:09,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:59:09,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542502862] [2021-06-05 23:59:09,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:59:09,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:09,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:59:09,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:59:09,663 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:09,838 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 23:59:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:59:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:09,840 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 23:59:09,840 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 23:59:09,841 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 23:59:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 23:59:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 23:59:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 23:59:09,855 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 23:59:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:09,855 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 23:59:09,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 23:59:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:09,856 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:09,856 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:10,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:10,072 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash 719526341, now seen corresponding path program 33 times [2021-06-05 23:59:10,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:10,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598346049] [2021-06-05 23:59:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:10,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:10,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598346049] [2021-06-05 23:59:10,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598346049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:10,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007405014] [2021-06-05 23:59:10,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:10,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:10,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:10,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:10,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:10,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007405014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:10,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:10,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:10,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662737037] [2021-06-05 23:59:10,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:10,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:10,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:10,203 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:10,472 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 23:59:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 23:59:10,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:10,474 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 23:59:10,474 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 23:59:10,475 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 185.8ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:59:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 23:59:10,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 23:59:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 23:59:10,491 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 23:59:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:10,491 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 23:59:10,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 23:59:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:10,492 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:10,492 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:10,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:10,708 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1932401801, now seen corresponding path program 34 times [2021-06-05 23:59:10,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:10,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141301359] [2021-06-05 23:59:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:10,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:10,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141301359] [2021-06-05 23:59:10,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141301359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:10,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100369293] [2021-06-05 23:59:10,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:10,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:10,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:10,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:10,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:10,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100369293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:10,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:10,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:59:10,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702566650] [2021-06-05 23:59:10,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:59:10,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:59:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:59:10,844 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:11,079 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 23:59:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 23:59:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:11,082 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 23:59:11,082 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 23:59:11,082 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 23:59:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 23:59:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 23:59:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 23:59:11,097 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 23:59:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:11,098 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 23:59:11,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 23:59:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:59:11,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:11,099 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:11,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-06-05 23:59:11,309 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:11,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:11,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1095108317, now seen corresponding path program 35 times [2021-06-05 23:59:11,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:11,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075141745] [2021-06-05 23:59:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:11,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:11,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075141745] [2021-06-05 23:59:11,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075141745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:11,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008956103] [2021-06-05 23:59:11,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:11,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:11,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:11,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:59:11,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:11,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008956103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:11,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:11,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:59:11,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734236533] [2021-06-05 23:59:11,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:59:11,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:11,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:59:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:59:11,411 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:11,568 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 23:59:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:59:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 23:59:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:11,570 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 23:59:11,570 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 23:59:11,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 23:59:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 23:59:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 23:59:11,584 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 23:59:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:11,584 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 23:59:11,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 23:59:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:11,586 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:11,586 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:11,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:11,786 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:11,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1918687339, now seen corresponding path program 4 times [2021-06-05 23:59:11,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:11,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439701920] [2021-06-05 23:59:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:12,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:12,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439701920] [2021-06-05 23:59:12,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439701920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:12,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424985567] [2021-06-05 23:59:12,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:12,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:12,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:12,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 23:59:12,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:12,579 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:12,584 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 23:59:12,590 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:12,596 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:12,601 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:12,607 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:12,613 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:12,618 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:12,624 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:12,629 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:12,634 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 23:59:12,640 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:12,645 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:12,650 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 23:59:12,654 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,671 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:59:12,672 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:12,672 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 23:59:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:12,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424985567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:12,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:12,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:59:12,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728137766] [2021-06-05 23:59:12,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:59:12,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:59:12,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:59:12,695 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:13,361 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-05 23:59:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:59:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:13,363 INFO L225 Difference]: With dead ends: 1517 [2021-06-05 23:59:13,363 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 23:59:13,363 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 851.7ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:59:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 23:59:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-05 23:59:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 23:59:13,377 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 23:59:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:13,377 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 23:59:13,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 23:59:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:13,378 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:13,379 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:13,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:13,579 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:13,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:13,579 INFO L82 PathProgramCache]: Analyzing trace with hash -109710677, now seen corresponding path program 5 times [2021-06-05 23:59:13,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:13,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546388234] [2021-06-05 23:59:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:14,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:14,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546388234] [2021-06-05 23:59:14,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546388234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:14,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060314034] [2021-06-05 23:59:14,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:14,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:14,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:14,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:14,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:14,480 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-06-05 23:59:14,536 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_3], 2=[A, v_prenex_5]} [2021-06-05 23:59:14,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:14,541 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,644 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-06-05 23:59:14,644 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 23:59:14,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:14,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 23:59:14,649 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,670 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:14,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:14,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 23:59:14,675 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:14,695 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:14,695 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:15 [2021-06-05 23:59:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:14,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060314034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:14,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:14,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:59:14,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038292824] [2021-06-05 23:59:14,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:59:14,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:59:14,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:59:14,723 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:15,692 INFO L93 Difference]: Finished difference Result 1714 states and 5519 transitions. [2021-06-05 23:59:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:59:15,692 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:15,694 INFO L225 Difference]: With dead ends: 1714 [2021-06-05 23:59:15,694 INFO L226 Difference]: Without dead ends: 1684 [2021-06-05 23:59:15,695 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1254.3ms TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2021-06-05 23:59:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-06-05 23:59:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1168. [2021-06-05 23:59:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 3.348757497857755) internal successors, (3908), 1167 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3908 transitions. [2021-06-05 23:59:15,709 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3908 transitions. Word has length 26 [2021-06-05 23:59:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:15,709 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3908 transitions. [2021-06-05 23:59:15,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3908 transitions. [2021-06-05 23:59:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:15,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:15,711 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:15,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:15,911 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:15,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1481718631, now seen corresponding path program 36 times [2021-06-05 23:59:15,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:15,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543162007] [2021-06-05 23:59:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:16,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:16,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543162007] [2021-06-05 23:59:16,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543162007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:16,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485567941] [2021-06-05 23:59:16,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:16,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:16,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:16,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 23:59:16,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:16,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:16,848 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:16,856 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 23:59:16,863 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 23:59:16,871 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 23:59:16,879 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:16,887 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 23:59:16,895 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 23:59:16,903 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 23:59:16,911 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 23:59:16,919 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:16,926 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 23:59:16,938 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 23:59:16,946 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:16,954 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:16,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:16,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:16,958 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:16,975 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:59:16,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:16,976 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 23:59:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:16,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485567941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:16,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:16,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:59:16,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527883383] [2021-06-05 23:59:16,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:16,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:16,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:16,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:17,000 INFO L87 Difference]: Start difference. First operand 1168 states and 3908 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:18,299 INFO L93 Difference]: Finished difference Result 1625 states and 5243 transitions. [2021-06-05 23:59:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 23:59:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:18,301 INFO L225 Difference]: With dead ends: 1625 [2021-06-05 23:59:18,301 INFO L226 Difference]: Without dead ends: 1610 [2021-06-05 23:59:18,301 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1455.3ms TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 23:59:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-06-05 23:59:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1198. [2021-06-05 23:59:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.3333333333333335) internal successors, (3990), 1197 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 3990 transitions. [2021-06-05 23:59:18,316 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 3990 transitions. Word has length 26 [2021-06-05 23:59:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:18,316 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 3990 transitions. [2021-06-05 23:59:18,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 3990 transitions. [2021-06-05 23:59:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:18,318 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:18,318 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:18,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-06-05 23:59:18,518 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2008201489, now seen corresponding path program 6 times [2021-06-05 23:59:18,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:18,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14603477] [2021-06-05 23:59:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:18,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:18,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14603477] [2021-06-05 23:59:18,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14603477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:18,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027243567] [2021-06-05 23:59:18,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:18,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:18,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:18,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 23:59:18,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:19,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,101 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 23:59:19,101 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:19,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 23:59:19,114 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,122 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:19,122 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,132 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:19,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 23:59:19,136 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:19,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 23:59:19,150 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,162 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:19,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-05 23:59:19,163 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,171 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 23:59:19,172 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,182 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:19,184 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,193 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 23:59:19,194 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,204 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:19,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-05 23:59:19,206 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,216 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:19,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 23:59:19,217 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,226 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 23:59:19,227 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,235 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 23:59:19,235 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,242 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:19,243 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,249 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:19,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:19,251 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:19,257 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:19,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 23:59:19,259 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:19,340 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.6 percent of original size [2021-06-05 23:59:19,341 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 23:59:19,341 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:95 [2021-06-05 23:59:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:19,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027243567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:19,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:19,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:19,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076928688] [2021-06-05 23:59:19,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:19,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:19,439 INFO L87 Difference]: Start difference. First operand 1198 states and 3990 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:20,916 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-05 23:59:21,374 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-06-05 23:59:21,550 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-06-05 23:59:21,995 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 23:59:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:22,279 INFO L93 Difference]: Finished difference Result 2145 states and 6707 transitions. [2021-06-05 23:59:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 23:59:22,279 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:22,282 INFO L225 Difference]: With dead ends: 2145 [2021-06-05 23:59:22,282 INFO L226 Difference]: Without dead ends: 2100 [2021-06-05 23:59:22,283 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 2627.6ms TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 23:59:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-06-05 23:59:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1216. [2021-06-05 23:59:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1215 states have (on average 3.3390946502057615) internal successors, (4057), 1215 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 4057 transitions. [2021-06-05 23:59:22,301 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 4057 transitions. Word has length 26 [2021-06-05 23:59:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:22,302 INFO L482 AbstractCegarLoop]: Abstraction has 1216 states and 4057 transitions. [2021-06-05 23:59:22,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 4057 transitions. [2021-06-05 23:59:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:22,303 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:22,303 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:22,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:22,515 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:22,515 INFO L82 PathProgramCache]: Analyzing trace with hash -457819925, now seen corresponding path program 37 times [2021-06-05 23:59:22,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:22,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869727020] [2021-06-05 23:59:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:22,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:22,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869727020] [2021-06-05 23:59:22,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869727020] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:22,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583866637] [2021-06-05 23:59:22,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:22,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 23:59:22,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:23,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 23:59:23,440 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 23:59:23,448 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 23:59:23,457 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 23:59:23,466 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 23:59:23,477 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:23,485 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 23:59:23,500 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:23,509 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 23:59:23,522 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:23,530 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 23:59:23,538 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:23,545 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:23,552 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 23:59:23,559 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:23,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:23,567 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,585 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:59:23,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:23,586 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 23:59:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:23,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583866637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:23,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:23,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:59:23,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922307398] [2021-06-05 23:59:23,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:23,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:23,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:23,610 INFO L87 Difference]: Start difference. First operand 1216 states and 4057 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:26,383 INFO L93 Difference]: Finished difference Result 1915 states and 6096 transitions. [2021-06-05 23:59:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 23:59:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:26,386 INFO L225 Difference]: With dead ends: 1915 [2021-06-05 23:59:26,386 INFO L226 Difference]: Without dead ends: 1900 [2021-06-05 23:59:26,387 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2706.3ms TimeCoverageRelationStatistics Valid=500, Invalid=2362, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 23:59:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-06-05 23:59:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1227. [2021-06-05 23:59:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 3.3450244698205545) internal successors, (4101), 1226 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 4101 transitions. [2021-06-05 23:59:26,402 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 4101 transitions. Word has length 26 [2021-06-05 23:59:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:26,402 INFO L482 AbstractCegarLoop]: Abstraction has 1227 states and 4101 transitions. [2021-06-05 23:59:26,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 4101 transitions. [2021-06-05 23:59:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:26,404 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:26,404 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:26,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:26,604 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:26,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1434138769, now seen corresponding path program 38 times [2021-06-05 23:59:26,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:26,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303427990] [2021-06-05 23:59:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:26,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:26,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303427990] [2021-06-05 23:59:26,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303427990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:26,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292312770] [2021-06-05 23:59:26,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:26,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:26,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 23:59:26,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:27,555 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 23:59:27,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 23:59:27,569 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,608 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 23:59:27,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-05 23:59:27,615 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,636 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 23:59:27,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 23:59:27,637 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,669 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-05 23:59:27,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 23:59:27,671 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,712 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 23:59:27,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-05 23:59:27,720 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,737 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 23:59:27,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 23:59:27,738 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,778 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 23:59:27,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-05 23:59:27,787 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,831 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 23:59:27,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 23:59:27,840 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,873 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-05 23:59:27,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 23:59:27,875 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,916 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 23:59:27,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 45 [2021-06-05 23:59:27,926 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,964 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 23:59:27,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-05 23:59:27,976 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:27,994 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 23:59:27,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 1 [2021-06-05 23:59:27,995 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,012 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 23:59:28,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 23:59:28,013 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,048 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 23:59:28,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 23:59:28,054 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,101 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 23:59:28,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 23:59:28,108 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,139 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 23:59:28,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-05 23:59:28,144 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,394 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2021-06-05 23:59:28,395 INFO L628 ElimStorePlain]: treesize reduction 279, result has 51.0 percent of original size [2021-06-05 23:59:28,419 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:59:28,419 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:341 [2021-06-05 23:59:28,633 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-06-05 23:59:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:28,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292312770] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:28,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:28,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 23:59:28,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954117812] [2021-06-05 23:59:28,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 23:59:28,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 23:59:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-06-05 23:59:28,789 INFO L87 Difference]: Start difference. First operand 1227 states and 4101 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:30,441 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2021-06-05 23:59:30,850 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-06-05 23:59:31,205 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2021-06-05 23:59:31,644 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-06-05 23:59:31,919 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2021-06-05 23:59:32,448 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 23:59:32,813 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-06-05 23:59:32,985 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 37 [2021-06-05 23:59:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:33,505 INFO L93 Difference]: Finished difference Result 2515 states and 7728 transitions. [2021-06-05 23:59:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 23:59:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:33,508 INFO L225 Difference]: With dead ends: 2515 [2021-06-05 23:59:33,508 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 23:59:33,509 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 4789.5ms TimeCoverageRelationStatistics Valid=695, Invalid=3727, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 23:59:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 23:59:33,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1399. [2021-06-05 23:59:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.3125894134477827) internal successors, (4631), 1398 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 4631 transitions. [2021-06-05 23:59:33,529 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 4631 transitions. Word has length 26 [2021-06-05 23:59:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:33,529 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 4631 transitions. [2021-06-05 23:59:33,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 4631 transitions. [2021-06-05 23:59:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:33,531 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:33,531 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:33,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable364 [2021-06-05 23:59:33,732 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash 775761299, now seen corresponding path program 7 times [2021-06-05 23:59:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:33,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359981936] [2021-06-05 23:59:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:34,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:34,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359981936] [2021-06-05 23:59:34,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359981936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:34,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044799755] [2021-06-05 23:59:34,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:34,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 23:59:34,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:34,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 23:59:34,501 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:34,507 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:34,513 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 23:59:34,519 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:34,527 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:34,533 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:34,539 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 23:59:34,546 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:34,552 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:34,558 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:34,564 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:34,570 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:34,579 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:34,584 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:34,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:34,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:34,588 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:34,606 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:59:34,607 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:34,607 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 23:59:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:34,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044799755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:34,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:34,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:59:34,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303813123] [2021-06-05 23:59:34,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:59:34,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:34,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:59:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:59:34,631 INFO L87 Difference]: Start difference. First operand 1399 states and 4631 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:35,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:35,440 INFO L93 Difference]: Finished difference Result 1804 states and 5851 transitions. [2021-06-05 23:59:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 23:59:35,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:35,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:35,443 INFO L225 Difference]: With dead ends: 1804 [2021-06-05 23:59:35,443 INFO L226 Difference]: Without dead ends: 1789 [2021-06-05 23:59:35,443 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1050.7ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:59:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2021-06-05 23:59:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1410. [2021-06-05 23:59:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.3101490418736694) internal successors, (4664), 1409 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 4664 transitions. [2021-06-05 23:59:35,462 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 4664 transitions. Word has length 26 [2021-06-05 23:59:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:35,462 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 4664 transitions. [2021-06-05 23:59:35,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 4664 transitions. [2021-06-05 23:59:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:35,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:35,464 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:35,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:35,664 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:35,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1252636717, now seen corresponding path program 8 times [2021-06-05 23:59:35,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:35,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523645527] [2021-06-05 23:59:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:35,900 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2021-06-05 23:59:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:36,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:36,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523645527] [2021-06-05 23:59:36,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523645527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:36,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378841861] [2021-06-05 23:59:36,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:36,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:36,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:36,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 23:59:36,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:36,458 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 23:59:36,577 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:36,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 23:59:36,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,593 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:36,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:36,594 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,915 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 125 [2021-06-05 23:59:36,916 INFO L628 ElimStorePlain]: treesize reduction 146, result has 72.2 percent of original size [2021-06-05 23:59:36,939 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:36,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 23:59:36,941 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:36,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 23:59:36,962 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:37,220 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2021-06-05 23:59:37,221 INFO L628 ElimStorePlain]: treesize reduction 31, result has 91.5 percent of original size [2021-06-05 23:59:37,236 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:37,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 23:59:37,244 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:37,366 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 23:59:37,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:37,384 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:37,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 23:59:37,386 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:37,503 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 23:59:37,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:37,525 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:37,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 23:59:37,529 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:37,642 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 23:59:37,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:37,666 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:37,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 23:59:37,674 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:37,779 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 23:59:37,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:37,799 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:37,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 23:59:37,801 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:37,911 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 23:59:37,912 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:37,927 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:37,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 23:59:37,929 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:38,043 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:59:38,043 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:331 [2021-06-05 23:59:38,197 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2021-06-05 23:59:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:38,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378841861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:38,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:38,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 23:59:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024527463] [2021-06-05 23:59:38,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:38,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:38,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:38,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:38,251 INFO L87 Difference]: Start difference. First operand 1410 states and 4664 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:39,081 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-06-05 23:59:39,649 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 23:59:39,858 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-05 23:59:40,233 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-05 23:59:40,530 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-05 23:59:40,927 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2021-06-05 23:59:41,380 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-06-05 23:59:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:41,531 INFO L93 Difference]: Finished difference Result 2138 states and 6778 transitions. [2021-06-05 23:59:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 23:59:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:41,534 INFO L225 Difference]: With dead ends: 2138 [2021-06-05 23:59:41,534 INFO L226 Difference]: Without dead ends: 2108 [2021-06-05 23:59:41,534 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 3531.7ms TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 23:59:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-06-05 23:59:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1416. [2021-06-05 23:59:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.3123674911660776) internal successors, (4687), 1415 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4687 transitions. [2021-06-05 23:59:41,553 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4687 transitions. Word has length 26 [2021-06-05 23:59:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:41,553 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 4687 transitions. [2021-06-05 23:59:41,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4687 transitions. [2021-06-05 23:59:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:41,555 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:41,555 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:41,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable552 [2021-06-05 23:59:41,755 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:41,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1104920871, now seen corresponding path program 9 times [2021-06-05 23:59:41,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:41,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328244686] [2021-06-05 23:59:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:41,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:41,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328244686] [2021-06-05 23:59:41,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328244686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:41,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479439309] [2021-06-05 23:59:41,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:41,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:41,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:41,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 23:59:41,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:42,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:42,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:42,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:42,586 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:42,690 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-06-05 23:59:42,690 INFO L628 ElimStorePlain]: treesize reduction 130, result has 44.0 percent of original size [2021-06-05 23:59:42,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:42,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 23:59:42,696 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:42,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:42,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:42,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 23:59:42,732 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:42,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:42,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:42,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:42,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:42,763 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:42,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:42,786 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 23:59:42,787 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:265, output treesize:29 [2021-06-05 23:59:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:42,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479439309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:42,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:42,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:59:42,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636708808] [2021-06-05 23:59:42,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:59:42,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:59:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:59:42,819 INFO L87 Difference]: Start difference. First operand 1416 states and 4687 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:43,368 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-06-05 23:59:43,604 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 23:59:43,768 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-05 23:59:44,112 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-06-05 23:59:44,281 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-06-05 23:59:44,562 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2021-06-05 23:59:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:44,673 INFO L93 Difference]: Finished difference Result 2242 states and 7149 transitions. [2021-06-05 23:59:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 23:59:44,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:44,676 INFO L225 Difference]: With dead ends: 2242 [2021-06-05 23:59:44,676 INFO L226 Difference]: Without dead ends: 2212 [2021-06-05 23:59:44,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1990.0ms TimeCoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 23:59:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-06-05 23:59:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1446. [2021-06-05 23:59:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 3.322491349480969) internal successors, (4801), 1445 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4801 transitions. [2021-06-05 23:59:44,696 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4801 transitions. Word has length 26 [2021-06-05 23:59:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:44,696 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4801 transitions. [2021-06-05 23:59:44,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4801 transitions. [2021-06-05 23:59:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:44,698 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:44,698 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:44,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:44,899 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:44,899 INFO L82 PathProgramCache]: Analyzing trace with hash 937111779, now seen corresponding path program 10 times [2021-06-05 23:59:44,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:44,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243469531] [2021-06-05 23:59:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:45,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:45,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243469531] [2021-06-05 23:59:45,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243469531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:45,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234308365] [2021-06-05 23:59:45,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:45,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:45,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:45,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 23:59:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:45,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:45,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:45,518 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:45,524 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:45,529 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:45,535 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:45,540 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:45,545 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 23:59:45,551 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:45,556 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:45,561 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:45,567 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 23:59:45,572 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:45,577 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:45,582 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:45,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:45,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 23:59:45,585 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:45,603 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:59:45,604 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:45,604 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 23:59:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:45,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234308365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:45,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:45,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 23:59:45,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087213839] [2021-06-05 23:59:45,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 23:59:45,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:45,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 23:59:45,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 23:59:45,631 INFO L87 Difference]: Start difference. First operand 1446 states and 4801 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:46,181 INFO L93 Difference]: Finished difference Result 1753 states and 5743 transitions. [2021-06-05 23:59:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:59:46,181 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:46,184 INFO L225 Difference]: With dead ends: 1753 [2021-06-05 23:59:46,184 INFO L226 Difference]: Without dead ends: 1738 [2021-06-05 23:59:46,184 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 644.6ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:59:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-06-05 23:59:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1455. [2021-06-05 23:59:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.3266850068775793) internal successors, (4837), 1454 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4837 transitions. [2021-06-05 23:59:46,201 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4837 transitions. Word has length 26 [2021-06-05 23:59:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:46,201 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4837 transitions. [2021-06-05 23:59:46,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4837 transitions. [2021-06-05 23:59:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:46,204 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:46,204 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:46,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:46,404 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:46,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1130404249, now seen corresponding path program 11 times [2021-06-05 23:59:46,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:46,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980708397] [2021-06-05 23:59:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:46,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:46,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980708397] [2021-06-05 23:59:46,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980708397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:46,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712444811] [2021-06-05 23:59:46,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:46,628 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:46,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:46,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:46,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,002 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 23:59:47,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,014 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 23:59:47,016 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,024 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:47,025 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,036 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 23:59:47,038 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 23:59:47,065 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,075 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:47,076 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,084 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:47,085 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,097 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 23:59:47,098 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,106 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:47,107 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 23:59:47,121 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:47,130 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,139 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2021-06-05 23:59:47,140 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,148 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:47,149 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,156 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:47,157 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,165 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:47,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:59:47,166 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,173 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 23:59:47,175 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,267 INFO L628 ElimStorePlain]: treesize reduction 24, result has 82.5 percent of original size [2021-06-05 23:59:47,269 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 23:59:47,269 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:91 [2021-06-05 23:59:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:47,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712444811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:47,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:47,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:59:47,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847227358] [2021-06-05 23:59:47,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:59:47,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:59:47,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:59:47,356 INFO L87 Difference]: Start difference. First operand 1455 states and 4837 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:48,246 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 23:59:48,659 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-06-05 23:59:48,842 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-06-05 23:59:49,052 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-06-05 23:59:49,618 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-06-05 23:59:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:49,779 INFO L93 Difference]: Finished difference Result 2493 states and 7968 transitions. [2021-06-05 23:59:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 23:59:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:49,783 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 23:59:49,783 INFO L226 Difference]: Without dead ends: 2463 [2021-06-05 23:59:49,783 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2244.8ms TimeCoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 23:59:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-06-05 23:59:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1468. [2021-06-05 23:59:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3340149965916837) internal successors, (4891), 1467 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4891 transitions. [2021-06-05 23:59:49,805 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4891 transitions. Word has length 26 [2021-06-05 23:59:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:49,805 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4891 transitions. [2021-06-05 23:59:49,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4891 transitions. [2021-06-05 23:59:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:49,807 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:49,807 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:50,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:50,021 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:50,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1627125609, now seen corresponding path program 12 times [2021-06-05 23:59:50,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:50,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886871115] [2021-06-05 23:59:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:50,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:50,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886871115] [2021-06-05 23:59:50,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886871115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:50,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986891276] [2021-06-05 23:59:50,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:50,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:50,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 23:59:50,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:50,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,544 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:50,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 23:59:50,545 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,558 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 23:59:50,558 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:50,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-06-05 23:59:50,578 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,591 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 23:59:50,592 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,602 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:50,604 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,615 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:50,616 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,629 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:50,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 23:59:50,630 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,642 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 23:59:50,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,654 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:50,655 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,667 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 23:59:50,667 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,678 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 23:59:50,679 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,689 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 23:59:50,691 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,700 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:50,701 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,711 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 23:59:50,712 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,724 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:50,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 23:59:50,726 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:50,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:50,733 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:50,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 23:59:50,733 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:50,800 INFO L628 ElimStorePlain]: treesize reduction 19, result has 82.2 percent of original size [2021-06-05 23:59:50,801 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:59:50,801 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:689, output treesize:88 [2021-06-05 23:59:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:50,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986891276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:50,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:50,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:50,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034616175] [2021-06-05 23:59:50,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:50,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:50,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:50,878 INFO L87 Difference]: Start difference. First operand 1468 states and 4891 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:52,520 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-06-05 23:59:52,863 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-06-05 23:59:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:53,230 INFO L93 Difference]: Finished difference Result 2313 states and 7429 transitions. [2021-06-05 23:59:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 23:59:53,230 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:53,233 INFO L225 Difference]: With dead ends: 2313 [2021-06-05 23:59:53,233 INFO L226 Difference]: Without dead ends: 2283 [2021-06-05 23:59:53,234 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2232.2ms TimeCoverageRelationStatistics Valid=388, Invalid=1868, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 23:59:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-06-05 23:59:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 1477. [2021-06-05 23:59:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 3.3401084010840107) internal successors, (4930), 1476 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4930 transitions. [2021-06-05 23:59:53,254 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4930 transitions. Word has length 26 [2021-06-05 23:59:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:53,254 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4930 transitions. [2021-06-05 23:59:53,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4930 transitions. [2021-06-05 23:59:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:53,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:53,256 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:53,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable695 [2021-06-05 23:59:53,457 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash -158392533, now seen corresponding path program 39 times [2021-06-05 23:59:53,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:53,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534963112] [2021-06-05 23:59:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:53,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:53,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534963112] [2021-06-05 23:59:53,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534963112] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:53,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166080151] [2021-06-05 23:59:53,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:53,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:53,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:53,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 23:59:53,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:54,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 23:59:54,230 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:54,238 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 23:59:54,246 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:54,254 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:54,261 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 23:59:54,268 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 23:59:54,276 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 23:59:54,284 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:54,292 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:54,300 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 23:59:54,308 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:54,315 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 23:59:54,323 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 23:59:54,330 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:54,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:54,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 23:59:54,335 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:54,353 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 23:59:54,354 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:54,354 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 23:59:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:54,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166080151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:54,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:54,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 23:59:54,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019513613] [2021-06-05 23:59:54,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:59:54,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:54,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:59:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:59:54,382 INFO L87 Difference]: Start difference. First operand 1477 states and 4930 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:55,071 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-05 23:59:55,532 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 23:59:56,126 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 23:59:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:57,307 INFO L93 Difference]: Finished difference Result 3323 states and 10316 transitions. [2021-06-05 23:59:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 23:59:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 23:59:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:57,312 INFO L225 Difference]: With dead ends: 3323 [2021-06-05 23:59:57,312 INFO L226 Difference]: Without dead ends: 3278 [2021-06-05 23:59:57,312 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 2732.4ms TimeCoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 23:59:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2021-06-05 23:59:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 1496. [2021-06-05 23:59:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3578595317725752) internal successors, (5020), 1495 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5020 transitions. [2021-06-05 23:59:57,345 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5020 transitions. Word has length 26 [2021-06-05 23:59:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:57,345 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5020 transitions. [2021-06-05 23:59:57,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5020 transitions. [2021-06-05 23:59:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:57,347 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:57,347 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:59:57,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable716 [2021-06-05 23:59:57,553 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1043919835, now seen corresponding path program 40 times [2021-06-05 23:59:57,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:57,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070921646] [2021-06-05 23:59:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:57,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:57,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070921646] [2021-06-05 23:59:57,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070921646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:57,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758100749] [2021-06-05 23:59:57,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 23:59:57,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:57,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:57,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 23:59:57,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:58,400 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 23:59:58,407 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 23:59:58,415 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:58,422 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 23:59:58,429 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 23:59:58,435 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 23:59:58,443 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 23:59:58,451 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 23:59:58,459 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:58,468 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 23:59:58,475 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 23:59:58,482 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 23:59:58,488 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:58,495 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:58,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 23:59:58,498 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,516 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:59:58,517 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:59:58,517 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 23:59:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 23:59:58,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758100749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:58,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:58,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 23:59:58,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988675546] [2021-06-05 23:59:58,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:59:58,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:58,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:59:58,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:59:58,545 INFO L87 Difference]: Start difference. First operand 1496 states and 5020 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:59,363 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-06-05 23:59:59,862 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-06 00:00:00,440 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-06-06 00:00:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:01,416 INFO L93 Difference]: Finished difference Result 3094 states and 9789 transitions. [2021-06-06 00:00:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:00:01,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:01,420 INFO L225 Difference]: With dead ends: 3094 [2021-06-06 00:00:01,420 INFO L226 Difference]: Without dead ends: 3049 [2021-06-06 00:00:01,421 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2697.4ms TimeCoverageRelationStatistics Valid=602, Invalid=2704, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:00:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-06-06 00:00:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 1496. [2021-06-06 00:00:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3585284280936456) internal successors, (5021), 1495 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5021 transitions. [2021-06-06 00:00:01,446 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5021 transitions. Word has length 26 [2021-06-06 00:00:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:01,446 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5021 transitions. [2021-06-06 00:00:01,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:01,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5021 transitions. [2021-06-06 00:00:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:01,448 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:01,448 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:01,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable806,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:01,649 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:01,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1417398809, now seen corresponding path program 41 times [2021-06-06 00:00:01,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:01,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312632956] [2021-06-06 00:00:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:01,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:01,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312632956] [2021-06-06 00:00:01,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312632956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:01,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781540082] [2021-06-06 00:00:01,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:01,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:00:01,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:01,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:01,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,677 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:00:02,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:00:02,681 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,695 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:02,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:00:02,696 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,855 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2021-06-06 00:00:02,856 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:00:02,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:00:02,860 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,876 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:02,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:00:02,877 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,894 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:02,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:00:02,894 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,909 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:02,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:00:02,910 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,932 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:00:02,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-06-06 00:00:02,933 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:02,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:00:02,966 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,988 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:00:02,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:00:02,990 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,005 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:03,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:00:03,005 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,026 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:00:03,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:00:03,028 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,045 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:03,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:00:03,045 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,074 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:03,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:03,075 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,107 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:03,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:00:03,108 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,123 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:03,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:00:03,124 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:03,132 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:00:03,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:00:03,133 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:03,211 INFO L628 ElimStorePlain]: treesize reduction 24, result has 79.5 percent of original size [2021-06-06 00:00:03,213 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:00:03,213 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-06 00:00:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:03,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781540082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:03,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:03,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:00:03,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329666581] [2021-06-06 00:00:03,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:00:03,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:03,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:00:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:00:03,301 INFO L87 Difference]: Start difference. First operand 1496 states and 5021 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:03,737 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-06 00:00:04,141 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-06 00:00:04,902 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-06 00:00:05,557 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-06 00:00:06,391 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-06-06 00:00:06,551 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2021-06-06 00:00:06,802 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2021-06-06 00:00:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:07,425 INFO L93 Difference]: Finished difference Result 3560 states and 11117 transitions. [2021-06-06 00:00:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:00:07,426 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:07,431 INFO L225 Difference]: With dead ends: 3560 [2021-06-06 00:00:07,431 INFO L226 Difference]: Without dead ends: 3500 [2021-06-06 00:00:07,431 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 3427.1ms TimeCoverageRelationStatistics Valid=813, Invalid=3347, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:00:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-06-06 00:00:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 1512. [2021-06-06 00:00:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.370615486432826) internal successors, (5093), 1511 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5093 transitions. [2021-06-06 00:00:07,486 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5093 transitions. Word has length 26 [2021-06-06 00:00:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:07,486 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5093 transitions. [2021-06-06 00:00:07,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5093 transitions. [2021-06-06 00:00:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:07,488 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:07,488 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:07,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable902 [2021-06-06 00:00:07,701 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1034556623, now seen corresponding path program 13 times [2021-06-06 00:00:07,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:07,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664536803] [2021-06-06 00:00:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:08,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:08,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664536803] [2021-06-06 00:00:08,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664536803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:08,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479060901] [2021-06-06 00:00:08,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:08,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:00:08,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:08,410 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:08,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:08,420 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:08,425 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:08,439 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:08,444 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:00:08,451 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:08,456 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:00:08,461 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:08,474 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:08,480 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:08,485 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:00:08,490 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:08,494 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:08,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:08,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:08,497 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:08,514 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:00:08,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:08,516 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:00:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:08,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479060901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:08,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:08,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:08,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874471891] [2021-06-06 00:00:08,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:08,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:08,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:08,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:08,538 INFO L87 Difference]: Start difference. First operand 1512 states and 5093 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:09,240 INFO L93 Difference]: Finished difference Result 1895 states and 6252 transitions. [2021-06-06 00:00:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:00:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:09,243 INFO L225 Difference]: With dead ends: 1895 [2021-06-06 00:00:09,243 INFO L226 Difference]: Without dead ends: 1880 [2021-06-06 00:00:09,243 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 840.9ms TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:00:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-06-06 00:00:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1520. [2021-06-06 00:00:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.366688610928242) internal successors, (5114), 1519 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 5114 transitions. [2021-06-06 00:00:09,264 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 5114 transitions. Word has length 26 [2021-06-06 00:00:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:09,264 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 5114 transitions. [2021-06-06 00:00:09,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 5114 transitions. [2021-06-06 00:00:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:09,266 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:09,266 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:09,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1025 [2021-06-06 00:00:09,481 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1195907103, now seen corresponding path program 14 times [2021-06-06 00:00:09,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:09,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135607108] [2021-06-06 00:00:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:09,760 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-06-06 00:00:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:09,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:09,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135607108] [2021-06-06 00:00:09,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135607108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:09,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795207334] [2021-06-06 00:00:09,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:09,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:00:09,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:09,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:10,327 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:10,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:00:10,329 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,338 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:10,340 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,348 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:10,350 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,359 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:10,361 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,370 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:10,376 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,387 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:10,388 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,407 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:10,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:00:10,409 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,424 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:00:10,428 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,447 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:10,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:00:10,451 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,460 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:10,461 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,484 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:10,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:00:10,485 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,498 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-06-06 00:00:10,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 19 [2021-06-06 00:00:10,499 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,508 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:10,509 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,518 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:10,519 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,527 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:10,528 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,534 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:10,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:10,534 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,659 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-06-06 00:00:10,660 INFO L628 ElimStorePlain]: treesize reduction 4, result has 97.4 percent of original size [2021-06-06 00:00:10,664 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:00:10,664 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:697, output treesize:177 [2021-06-06 00:00:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:10,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795207334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:10,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:10,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-06 00:00:10,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903660688] [2021-06-06 00:00:10,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:00:10,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:10,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:00:10,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:00:10,914 INFO L87 Difference]: Start difference. First operand 1520 states and 5114 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:11,768 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-06 00:00:11,985 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2021-06-06 00:00:12,200 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2021-06-06 00:00:12,511 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-06 00:00:12,731 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-06 00:00:12,942 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-06-06 00:00:13,464 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2021-06-06 00:00:13,682 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 22 [2021-06-06 00:00:13,922 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-06-06 00:00:14,084 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2021-06-06 00:00:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:14,181 INFO L93 Difference]: Finished difference Result 2084 states and 6791 transitions. [2021-06-06 00:00:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:00:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:14,185 INFO L225 Difference]: With dead ends: 2084 [2021-06-06 00:00:14,185 INFO L226 Difference]: Without dead ends: 2069 [2021-06-06 00:00:14,185 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 3349.2ms TimeCoverageRelationStatistics Valid=323, Invalid=1839, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:00:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-06-06 00:00:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1516. [2021-06-06 00:00:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3755775577557756) internal successors, (5114), 1515 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5114 transitions. [2021-06-06 00:00:14,209 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5114 transitions. Word has length 26 [2021-06-06 00:00:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:14,209 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5114 transitions. [2021-06-06 00:00:14,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5114 transitions. [2021-06-06 00:00:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:14,212 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:14,212 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:14,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1067 [2021-06-06 00:00:14,413 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1175939077, now seen corresponding path program 15 times [2021-06-06 00:00:14,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:14,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577103796] [2021-06-06 00:00:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:14,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:14,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577103796] [2021-06-06 00:00:14,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577103796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:14,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619000957] [2021-06-06 00:00:14,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:14,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:00:14,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:14,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:00:14,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:15,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,139 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:15,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:15,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,149 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:15,150 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,163 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:15,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:00:15,164 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,173 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:15,174 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,184 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:15,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:00:15,186 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,195 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:15,195 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,204 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:15,205 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,214 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:15,215 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,233 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:15,233 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,245 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:15,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:15,247 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,271 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:15,272 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,302 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:15,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:00:15,306 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,314 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:15,315 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,322 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:15,323 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,334 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:15,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:15,336 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:15,341 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:15,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:15,342 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:15,429 INFO L628 ElimStorePlain]: treesize reduction 60, result has 57.4 percent of original size [2021-06-06 00:00:15,439 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:00:15,439 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:71 [2021-06-06 00:00:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:15,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619000957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:15,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:15,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:00:15,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502933793] [2021-06-06 00:00:15,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:15,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:15,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:15,529 INFO L87 Difference]: Start difference. First operand 1516 states and 5114 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:16,069 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-06-06 00:00:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:16,826 INFO L93 Difference]: Finished difference Result 2050 states and 6744 transitions. [2021-06-06 00:00:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:00:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:16,830 INFO L225 Difference]: With dead ends: 2050 [2021-06-06 00:00:16,830 INFO L226 Difference]: Without dead ends: 2035 [2021-06-06 00:00:16,830 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1307.2ms TimeCoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:00:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-06-06 00:00:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1516. [2021-06-06 00:00:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3755775577557756) internal successors, (5114), 1515 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5114 transitions. [2021-06-06 00:00:16,851 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5114 transitions. Word has length 26 [2021-06-06 00:00:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:16,851 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5114 transitions. [2021-06-06 00:00:16,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:16,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5114 transitions. [2021-06-06 00:00:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:16,853 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:16,853 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:17,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1121 [2021-06-06 00:00:17,069 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1368330285, now seen corresponding path program 16 times [2021-06-06 00:00:17,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:17,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370618611] [2021-06-06 00:00:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:17,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:17,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370618611] [2021-06-06 00:00:17,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370618611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:17,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423220586] [2021-06-06 00:00:17,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:17,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:00:17,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:17,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:00:17,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:17,753 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-06 00:00:17,967 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2021-06-06 00:00:18,029 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_38], 2=[A, v_prenex_37]} [2021-06-06 00:00:18,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:18,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:18,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:18,142 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-06-06 00:00:18,143 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-06 00:00:18,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:18,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:18,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:00:18,147 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:18,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:18,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:18,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:18,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:00:18,187 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:18,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:18,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:00:18,212 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-06 00:00:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:18,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423220586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:18,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:18,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:18,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64686585] [2021-06-06 00:00:18,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:18,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:18,251 INFO L87 Difference]: Start difference. First operand 1516 states and 5114 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:19,170 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:00:19,528 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-06-06 00:00:19,765 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-06 00:00:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:20,054 INFO L93 Difference]: Finished difference Result 2399 states and 7708 transitions. [2021-06-06 00:00:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:00:20,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:20,065 INFO L225 Difference]: With dead ends: 2399 [2021-06-06 00:00:20,065 INFO L226 Difference]: Without dead ends: 2354 [2021-06-06 00:00:20,065 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2080.3ms TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:00:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-06-06 00:00:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1531. [2021-06-06 00:00:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.3816993464052287) internal successors, (5174), 1530 states have internal predecessors, (5174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 5174 transitions. [2021-06-06 00:00:20,089 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 5174 transitions. Word has length 26 [2021-06-06 00:00:20,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:20,089 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 5174 transitions. [2021-06-06 00:00:20,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:20,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 5174 transitions. [2021-06-06 00:00:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:20,091 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:20,091 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:20,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1168,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:20,308 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:20,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1309104231, now seen corresponding path program 17 times [2021-06-06 00:00:20,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:20,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66529171] [2021-06-06 00:00:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:20,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:20,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66529171] [2021-06-06 00:00:20,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66529171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:20,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738571486] [2021-06-06 00:00:20,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:20,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:00:20,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:20,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:00:20,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:20,982 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-06 00:00:21,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:21,072 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:21,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:00:21,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:21,397 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2021-06-06 00:00:21,398 INFO L628 ElimStorePlain]: treesize reduction 116, result has 75.0 percent of original size [2021-06-06 00:00:21,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:21,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:21,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:00:21,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:21,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:21,429 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:21,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:21,430 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:21,677 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-06-06 00:00:21,678 INFO L628 ElimStorePlain]: treesize reduction 20, result has 93.6 percent of original size [2021-06-06 00:00:21,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:21,690 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:21,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:00:21,694 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:21,802 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-06 00:00:21,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:21,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:21,817 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:21,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:21,821 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:21,834 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:21,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:21,837 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:22,032 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-06-06 00:00:22,032 INFO L628 ElimStorePlain]: treesize reduction 16, result has 93.2 percent of original size [2021-06-06 00:00:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:22,045 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:22,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:22,047 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:22,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:22,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:22,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:22,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:00:22,143 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:22,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:22,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:22,231 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:22,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:00:22,233 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:22,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:22,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:22,316 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:22,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:22,317 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:22,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:22,391 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:22,391 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:479, output treesize:150 [2021-06-06 00:00:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:22,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738571486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:22,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:22,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:00:22,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936305615] [2021-06-06 00:00:22,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:00:22,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:22,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:00:22,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:00:22,508 INFO L87 Difference]: Start difference. First operand 1531 states and 5174 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:23,757 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-06 00:00:23,942 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-06 00:00:24,248 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-06-06 00:00:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:24,751 INFO L93 Difference]: Finished difference Result 2633 states and 8507 transitions. [2021-06-06 00:00:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:00:24,751 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:24,755 INFO L225 Difference]: With dead ends: 2633 [2021-06-06 00:00:24,755 INFO L226 Difference]: Without dead ends: 2603 [2021-06-06 00:00:24,755 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2305.2ms TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:00:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-06 00:00:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1532. [2021-06-06 00:00:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3860222077073807) internal successors, (5184), 1531 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5184 transitions. [2021-06-06 00:00:24,780 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5184 transitions. Word has length 26 [2021-06-06 00:00:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:24,780 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5184 transitions. [2021-06-06 00:00:24,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5184 transitions. [2021-06-06 00:00:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:24,783 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:24,783 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:24,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1180 [2021-06-06 00:00:24,999 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:24,999 INFO L82 PathProgramCache]: Analyzing trace with hash 826223339, now seen corresponding path program 18 times [2021-06-06 00:00:24,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:24,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680947973] [2021-06-06 00:00:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:25,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:25,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680947973] [2021-06-06 00:00:25,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680947973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:25,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352342676] [2021-06-06 00:00:25,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:25,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:00:25,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:25,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:00:25,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:25,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:00:25,694 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:25,700 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:00:25,707 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:25,713 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:00:25,720 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:25,726 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:25,731 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:25,737 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:25,742 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:25,748 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:25,753 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:25,759 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:25,764 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:25,769 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:25,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:25,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:25,773 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:25,791 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:00:25,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:25,792 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:00:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:25,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352342676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:25,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:25,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:00:25,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694482188] [2021-06-06 00:00:25,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:25,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:25,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:25,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:25,817 INFO L87 Difference]: Start difference. First operand 1532 states and 5184 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:26,765 INFO L93 Difference]: Finished difference Result 2023 states and 6645 transitions. [2021-06-06 00:00:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:00:26,766 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:26,768 INFO L225 Difference]: With dead ends: 2023 [2021-06-06 00:00:26,768 INFO L226 Difference]: Without dead ends: 1998 [2021-06-06 00:00:26,768 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1057.9ms TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:00:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-06-06 00:00:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1567. [2021-06-06 00:00:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.3812260536398466) internal successors, (5295), 1566 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 5295 transitions. [2021-06-06 00:00:26,787 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 5295 transitions. Word has length 26 [2021-06-06 00:00:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:26,788 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 5295 transitions. [2021-06-06 00:00:26,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 5295 transitions. [2021-06-06 00:00:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:26,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:26,790 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:26,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1208,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:26,991 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:26,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1409101781, now seen corresponding path program 19 times [2021-06-06 00:00:26,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:26,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292212991] [2021-06-06 00:00:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:27,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:27,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292212991] [2021-06-06 00:00:27,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292212991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:27,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555005724] [2021-06-06 00:00:27,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:27,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:00:27,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:27,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:27,587 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,598 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:27,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:00:27,599 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,610 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:27,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:27,612 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,620 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:27,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,628 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:27,629 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,641 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:27,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:00:27,649 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,660 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:27,660 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:27,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:27,677 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:27,686 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,695 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:27,695 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,706 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:27,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:27,707 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,715 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:27,716 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:27,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:00:27,729 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,737 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2021-06-06 00:00:27,737 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,745 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:27,745 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:27,750 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:27,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:00:27,751 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:27,842 INFO L628 ElimStorePlain]: treesize reduction 26, result has 82.8 percent of original size [2021-06-06 00:00:27,844 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:00:27,844 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:649, output treesize:91 [2021-06-06 00:00:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:27,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555005724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:27,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:27,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:27,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064405914] [2021-06-06 00:00:27,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:27,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:27,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:27,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:27,922 INFO L87 Difference]: Start difference. First operand 1567 states and 5295 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:28,798 INFO L93 Difference]: Finished difference Result 2240 states and 7336 transitions. [2021-06-06 00:00:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:00:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:28,801 INFO L225 Difference]: With dead ends: 2240 [2021-06-06 00:00:28,801 INFO L226 Difference]: Without dead ends: 2215 [2021-06-06 00:00:28,801 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1001.9ms TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:00:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2021-06-06 00:00:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1570. [2021-06-06 00:00:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1569 states have (on average 3.3817718291905674) internal successors, (5306), 1569 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:28,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 5306 transitions. [2021-06-06 00:00:28,823 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 5306 transitions. Word has length 26 [2021-06-06 00:00:28,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:28,823 INFO L482 AbstractCegarLoop]: Abstraction has 1570 states and 5306 transitions. [2021-06-06 00:00:28,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:28,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 5306 transitions. [2021-06-06 00:00:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:28,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:28,826 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:29,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1250,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:29,042 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:29,047 INFO L82 PathProgramCache]: Analyzing trace with hash 957187695, now seen corresponding path program 20 times [2021-06-06 00:00:29,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:29,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110212073] [2021-06-06 00:00:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:29,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:29,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110212073] [2021-06-06 00:00:29,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110212073] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:29,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485805719] [2021-06-06 00:00:29,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:29,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:00:29,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:29,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:00:29,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:29,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:29,833 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:29,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:00:29,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:29,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:29,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:29,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:00:29,854 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:29,987 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:00:29,987 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:29,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:30,011 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:30,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:00:30,012 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:30,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:30,031 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:30,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:00:30,038 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:30,157 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-06 00:00:30,158 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:30,180 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:30,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:00:30,181 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:30,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:30,199 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:30,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:00:30,202 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:30,308 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-06 00:00:30,308 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:30,328 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:30,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:00:30,333 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:30,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:30,348 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:30,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:30,349 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:30,446 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:30,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:30,462 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:329, output treesize:220 [2021-06-06 00:00:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:30,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485805719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:30,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:30,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:00:30,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239107398] [2021-06-06 00:00:30,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:30,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:30,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:30,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:30,623 INFO L87 Difference]: Start difference. First operand 1570 states and 5306 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:31,657 INFO L93 Difference]: Finished difference Result 1853 states and 6135 transitions. [2021-06-06 00:00:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:00:31,658 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:31,660 INFO L225 Difference]: With dead ends: 1853 [2021-06-06 00:00:31,660 INFO L226 Difference]: Without dead ends: 1828 [2021-06-06 00:00:31,660 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1140.3ms TimeCoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:00:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-06-06 00:00:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1583. [2021-06-06 00:00:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.3874841972187104) internal successors, (5359), 1582 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 5359 transitions. [2021-06-06 00:00:31,680 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 5359 transitions. Word has length 26 [2021-06-06 00:00:31,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:31,680 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 5359 transitions. [2021-06-06 00:00:31,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 5359 transitions. [2021-06-06 00:00:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:31,682 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:31,682 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:31,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1301,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:31,885 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash 423152783, now seen corresponding path program 21 times [2021-06-06 00:00:31,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:31,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441522008] [2021-06-06 00:00:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:32,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:32,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441522008] [2021-06-06 00:00:32,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441522008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:32,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508410048] [2021-06-06 00:00:32,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:32,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:00:32,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:32,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:32,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:32,555 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:00:32,840 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_67, v_prenex_66], 3=[v_prenex_68]} [2021-06-06 00:00:32,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:32,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:32,845 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:32,978 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-06-06 00:00:32,978 INFO L628 ElimStorePlain]: treesize reduction 123, result has 44.1 percent of original size [2021-06-06 00:00:32,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:32,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:32,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:00:32,983 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,010 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:33,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:00:33,014 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-06 00:00:33,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,066 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:33,066 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:234, output treesize:20 [2021-06-06 00:00:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:33,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508410048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:33,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:33,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:33,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569911500] [2021-06-06 00:00:33,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:33,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:33,094 INFO L87 Difference]: Start difference. First operand 1583 states and 5359 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:33,886 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-06 00:00:34,135 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-06-06 00:00:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:34,365 INFO L93 Difference]: Finished difference Result 2166 states and 7091 transitions. [2021-06-06 00:00:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:00:34,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:34,369 INFO L225 Difference]: With dead ends: 2166 [2021-06-06 00:00:34,369 INFO L226 Difference]: Without dead ends: 2121 [2021-06-06 00:00:34,369 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1461.4ms TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:00:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-06-06 00:00:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1613. [2021-06-06 00:00:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 3.3957816377171217) internal successors, (5474), 1612 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 5474 transitions. [2021-06-06 00:00:34,391 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 5474 transitions. Word has length 26 [2021-06-06 00:00:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:34,392 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 5474 transitions. [2021-06-06 00:00:34,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 5474 transitions. [2021-06-06 00:00:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:34,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:34,394 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:34,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1361,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:34,595 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1194379997, now seen corresponding path program 22 times [2021-06-06 00:00:34,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:34,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497809985] [2021-06-06 00:00:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:34,927 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2021-06-06 00:00:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:34,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:34,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497809985] [2021-06-06 00:00:34,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497809985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:34,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461824280] [2021-06-06 00:00:34,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:35,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:00:35,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:35,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:35,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:35,334 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 00:00:35,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:35,459 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:35,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:00:35,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:35,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:35,473 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:35,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-06 00:00:35,474 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:35,788 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2021-06-06 00:00:35,789 INFO L628 ElimStorePlain]: treesize reduction 69, result has 84.4 percent of original size [2021-06-06 00:00:35,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:35,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:35,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:35,809 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:35,976 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:00:35,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:35,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:35,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:35,996 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,009 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:36,012 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,276 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-06-06 00:00:36,277 INFO L628 ElimStorePlain]: treesize reduction 18, result has 94.4 percent of original size [2021-06-06 00:00:36,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,291 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:36,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:00:36,293 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,404 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:00:36,404 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:00:36,423 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,532 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-06 00:00:36,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,543 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:36,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:36,545 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,644 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:00:36,659 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,755 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:36,769 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:36,777 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:36,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:36,778 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:36,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:36,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:36,869 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-06 00:00:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:37,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461824280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:37,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:37,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:37,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547612974] [2021-06-06 00:00:37,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:37,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:37,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:37,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:37,006 INFO L87 Difference]: Start difference. First operand 1613 states and 5474 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:37,912 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:00:38,079 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:00:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:38,295 INFO L93 Difference]: Finished difference Result 2386 states and 7813 transitions. [2021-06-06 00:00:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:00:38,296 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:38,299 INFO L225 Difference]: With dead ends: 2386 [2021-06-06 00:00:38,299 INFO L226 Difference]: Without dead ends: 2352 [2021-06-06 00:00:38,299 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1577.3ms TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:00:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-06 00:00:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1599. [2021-06-06 00:00:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.392991239048811) internal successors, (5422), 1598 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 5422 transitions. [2021-06-06 00:00:38,328 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 5422 transitions. Word has length 26 [2021-06-06 00:00:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:38,328 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 5422 transitions. [2021-06-06 00:00:38,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 5422 transitions. [2021-06-06 00:00:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:38,331 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:38,331 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:38,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1375 [2021-06-06 00:00:38,531 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:38,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1410644395, now seen corresponding path program 23 times [2021-06-06 00:00:38,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:38,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038758942] [2021-06-06 00:00:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:38,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:38,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038758942] [2021-06-06 00:00:38,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038758942] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:38,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684386833] [2021-06-06 00:00:38,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:38,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:00:38,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:38,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:00:38,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:39,317 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-06 00:00:39,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:39,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:39,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-06 00:00:39,474 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:39,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:39,497 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:39,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:00:39,498 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:39,822 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-06 00:00:39,822 INFO L628 ElimStorePlain]: treesize reduction 10, result has 97.2 percent of original size [2021-06-06 00:00:39,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:39,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:39,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:39,839 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:39,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:39,850 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:39,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:00:39,851 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:39,992 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:00:39,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,005 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:40,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:00:40,006 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:00:40,019 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,144 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-06 00:00:40,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:40,161 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,171 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:40,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:00:40,172 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,281 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 00:00:40,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,293 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:00:40,297 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,306 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:40,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:00:40,308 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,402 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,407 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:00:40,407 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:391, output treesize:170 [2021-06-06 00:00:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:40,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684386833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:40,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:40,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:00:40,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295844255] [2021-06-06 00:00:40,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:00:40,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:40,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:00:40,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:00:40,555 INFO L87 Difference]: Start difference. First operand 1599 states and 5422 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:41,585 INFO L93 Difference]: Finished difference Result 2115 states and 7008 transitions. [2021-06-06 00:00:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:00:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:41,588 INFO L225 Difference]: With dead ends: 2115 [2021-06-06 00:00:41,588 INFO L226 Difference]: Without dead ends: 2090 [2021-06-06 00:00:41,588 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1357.2ms TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:00:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-06-06 00:00:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1599. [2021-06-06 00:00:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.392991239048811) internal successors, (5422), 1598 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 5422 transitions. [2021-06-06 00:00:41,608 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 5422 transitions. Word has length 26 [2021-06-06 00:00:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:41,608 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 5422 transitions. [2021-06-06 00:00:41,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 5422 transitions. [2021-06-06 00:00:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:41,610 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:41,610 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:41,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1404,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:41,811 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1510554133, now seen corresponding path program 42 times [2021-06-06 00:00:41,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:41,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393460369] [2021-06-06 00:00:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:42,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:42,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393460369] [2021-06-06 00:00:42,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393460369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:42,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461566417] [2021-06-06 00:00:42,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:42,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:00:42,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:42,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:00:42,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:00:42,490 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:00:42,497 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:00:42,504 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:00:42,511 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:00:42,518 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:00:42,525 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:00:42,532 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:42,539 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:00:42,546 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:00:42,553 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:00:42,560 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:42,567 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:00:42,573 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:00:42,579 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:42,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:42,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:00:42,583 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:42,602 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-06 00:00:42,603 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:42,603 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:00:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:42,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461566417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:42,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:42,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:00:42,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083340575] [2021-06-06 00:00:42,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:42,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:42,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:42,626 INFO L87 Difference]: Start difference. First operand 1599 states and 5422 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:43,906 INFO L93 Difference]: Finished difference Result 2060 states and 6796 transitions. [2021-06-06 00:00:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:00:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:43,909 INFO L225 Difference]: With dead ends: 2060 [2021-06-06 00:00:43,909 INFO L226 Difference]: Without dead ends: 2034 [2021-06-06 00:00:43,909 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1331.4ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:00:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-06-06 00:00:43,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1603. [2021-06-06 00:00:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.3907615480649187) internal successors, (5432), 1602 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5432 transitions. [2021-06-06 00:00:43,935 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5432 transitions. Word has length 26 [2021-06-06 00:00:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:43,935 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 5432 transitions. [2021-06-06 00:00:43,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5432 transitions. [2021-06-06 00:00:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:43,938 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:43,938 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:44,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1441 [2021-06-06 00:00:44,140 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash -442679569, now seen corresponding path program 43 times [2021-06-06 00:00:44,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:44,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913066409] [2021-06-06 00:00:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:44,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:44,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913066409] [2021-06-06 00:00:44,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913066409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:44,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984938536] [2021-06-06 00:00:44,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:44,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:00:44,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:44,819 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_92, v_prenex_96], 5=[v_prenex_94, A]} [2021-06-06 00:00:44,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:00:44,826 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2021-06-06 00:00:44,832 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,923 INFO L628 ElimStorePlain]: treesize reduction 133, result has 45.9 percent of original size [2021-06-06 00:00:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:00:44,929 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:44,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:00:44,959 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,982 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:44,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:00:44,986 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:45,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:45,013 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:00:45,014 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:303, output treesize:29 [2021-06-06 00:00:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:45,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984938536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:45,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:45,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:00:45,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342083894] [2021-06-06 00:00:45,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:45,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:45,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:45,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:45,056 INFO L87 Difference]: Start difference. First operand 1603 states and 5432 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:46,427 INFO L93 Difference]: Finished difference Result 2261 states and 7446 transitions. [2021-06-06 00:00:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:00:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:46,430 INFO L225 Difference]: With dead ends: 2261 [2021-06-06 00:00:46,430 INFO L226 Difference]: Without dead ends: 2246 [2021-06-06 00:00:46,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1509.2ms TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:00:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-06-06 00:00:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1603. [2021-06-06 00:00:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.3907615480649187) internal successors, (5432), 1602 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5432 transitions. [2021-06-06 00:00:46,452 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5432 transitions. Word has length 26 [2021-06-06 00:00:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:46,452 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 5432 transitions. [2021-06-06 00:00:46,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5432 transitions. [2021-06-06 00:00:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:46,454 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:46,454 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:46,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1531 [2021-06-06 00:00:46,655 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1031054993, now seen corresponding path program 24 times [2021-06-06 00:00:46,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:46,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835552191] [2021-06-06 00:00:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:46,888 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-06-06 00:00:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:46,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:46,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835552191] [2021-06-06 00:00:46,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835552191] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:46,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573103061] [2021-06-06 00:00:46,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:47,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:00:47,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:47,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:47,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:47,385 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 00:00:47,979 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:47,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:00:47,984 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,402 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-06-06 00:00:48,403 INFO L628 ElimStorePlain]: treesize reduction 126, result has 75.9 percent of original size [2021-06-06 00:00:48,429 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:48,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:00:48,433 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,610 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:00:48,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,633 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:48,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:00:48,635 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,796 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-06 00:00:48,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,817 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:48,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:00:48,819 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,963 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:00:48,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,982 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:00:48,987 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:49,130 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:00:49,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:49,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:49,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:00:49,151 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:49,161 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:49,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:00:49,162 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:49,405 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2021-06-06 00:00:49,405 INFO L628 ElimStorePlain]: treesize reduction 21, result has 93.4 percent of original size [2021-06-06 00:00:49,423 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:49,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:00:49,425 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:49,435 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:00:49,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:49,435 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:49,535 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:49,554 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:49,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:00:49,556 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:49,658 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:00:49,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:49,671 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:49,671 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:539, output treesize:402 [2021-06-06 00:00:49,876 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-06-06 00:00:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:49,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573103061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:49,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:49,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:00:49,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795213916] [2021-06-06 00:00:49,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:00:49,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:00:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:00:49,968 INFO L87 Difference]: Start difference. First operand 1603 states and 5432 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:50,696 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2021-06-06 00:00:51,244 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-06-06 00:00:51,399 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2021-06-06 00:00:51,658 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-06 00:00:51,921 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-06 00:00:52,109 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-06-06 00:00:52,446 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2021-06-06 00:00:52,797 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-06-06 00:00:53,160 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-06-06 00:00:53,550 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2021-06-06 00:00:54,102 WARN L205 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-06-06 00:00:54,321 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2021-06-06 00:00:54,901 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2021-06-06 00:00:55,257 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2021-06-06 00:00:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:55,459 INFO L93 Difference]: Finished difference Result 2594 states and 8222 transitions. [2021-06-06 00:00:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:00:55,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:00:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:55,463 INFO L225 Difference]: With dead ends: 2594 [2021-06-06 00:00:55,463 INFO L226 Difference]: Without dead ends: 2530 [2021-06-06 00:00:55,463 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 5785.5ms TimeCoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:00:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-06-06 00:00:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1635. [2021-06-06 00:00:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.401468788249694) internal successors, (5558), 1634 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 5558 transitions. [2021-06-06 00:00:55,487 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 5558 transitions. Word has length 26 [2021-06-06 00:00:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:55,487 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 5558 transitions. [2021-06-06 00:00:55,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 5558 transitions. [2021-06-06 00:00:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:55,489 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:55,489 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:00:55,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1545,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:55,689 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash 519326571, now seen corresponding path program 44 times [2021-06-06 00:00:55,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:55,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268422604] [2021-06-06 00:00:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:55,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:55,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268422604] [2021-06-06 00:00:55,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268422604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:55,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721606303] [2021-06-06 00:00:55,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:56,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:00:56,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:56,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:00:56,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:56,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,520 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:56,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 45 [2021-06-06 00:00:56,525 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,548 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-06 00:00:56,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-06 00:00:56,552 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,567 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:00:56,568 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,583 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:00:56,584 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,610 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:56,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-06 00:00:56,616 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,640 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-06 00:00:56,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 26 [2021-06-06 00:00:56,641 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,664 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:00:56,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:00:56,666 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,681 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:00:56,682 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,705 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:00:56,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:00:56,709 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,723 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:00:56,723 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,738 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:00:56,742 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,756 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:00:56,757 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,771 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:00:56,772 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,786 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:00:56,787 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,800 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:00:56,800 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,809 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:00:56,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:00:56,810 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,883 INFO L628 ElimStorePlain]: treesize reduction 56, result has 61.4 percent of original size [2021-06-06 00:00:56,885 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:00:56,885 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:745, output treesize:71 [2021-06-06 00:00:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:56,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721606303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:56,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:56,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-06-06 00:00:56,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078237449] [2021-06-06 00:00:56,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 00:00:56,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 00:00:56,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:00:56,961 INFO L87 Difference]: Start difference. First operand 1635 states and 5558 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:58,764 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-06-06 00:00:59,396 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-06-06 00:00:59,738 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-06-06 00:01:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:00,099 INFO L93 Difference]: Finished difference Result 2662 states and 8486 transitions. [2021-06-06 00:01:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:01:00,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:00,103 INFO L225 Difference]: With dead ends: 2662 [2021-06-06 00:01:00,103 INFO L226 Difference]: Without dead ends: 2618 [2021-06-06 00:01:00,103 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 2911.8ms TimeCoverageRelationStatistics Valid=692, Invalid=3598, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:01:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-06-06 00:01:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 1642. [2021-06-06 00:01:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.4021937842778796) internal successors, (5583), 1641 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5583 transitions. [2021-06-06 00:01:00,126 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5583 transitions. Word has length 26 [2021-06-06 00:01:00,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:00,126 INFO L482 AbstractCegarLoop]: Abstraction has 1642 states and 5583 transitions. [2021-06-06 00:01:00,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:00,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5583 transitions. [2021-06-06 00:01:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:00,128 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:00,128 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:00,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1623 [2021-06-06 00:01:00,329 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:00,329 INFO L82 PathProgramCache]: Analyzing trace with hash -456992273, now seen corresponding path program 45 times [2021-06-06 00:01:00,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:00,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032669876] [2021-06-06 00:01:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:00,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:00,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032669876] [2021-06-06 00:01:00,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032669876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:00,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661148057] [2021-06-06 00:01:00,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:00,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:01:00,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:00,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:01:00,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:01,159 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:01:01,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:01:01,168 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,202 INFO L354 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2021-06-06 00:01:01,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 34 [2021-06-06 00:01:01,203 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,233 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-06 00:01:01,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 30 [2021-06-06 00:01:01,234 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,264 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-06 00:01:01,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 30 [2021-06-06 00:01:01,265 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,296 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-06 00:01:01,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 30 [2021-06-06 00:01:01,297 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,327 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:01:01,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:01:01,327 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,365 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:01:01,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-06 00:01:01,373 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,410 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:01:01,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-06 00:01:01,417 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,458 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:01:01,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 45 [2021-06-06 00:01:01,470 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,487 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:01:01,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:01:01,487 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,504 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:01:01,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:01:01,505 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,521 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:01:01,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:01:01,522 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,567 INFO L354 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2021-06-06 00:01:01,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 33 [2021-06-06 00:01:01,568 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,605 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:01:01,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-06 00:01:01,611 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,626 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:01:01,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:01:01,627 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,654 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:01:01,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-06 00:01:01,662 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:01,932 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-06-06 00:01:01,933 INFO L628 ElimStorePlain]: treesize reduction 92, result has 77.5 percent of original size [2021-06-06 00:01:01,939 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-06 00:01:01,939 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:358 [2021-06-06 00:01:02,161 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-06 00:01:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:02,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661148057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:02,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:02,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-06 00:01:02,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457478636] [2021-06-06 00:01:02,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:01:02,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:01:02,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:01:02,270 INFO L87 Difference]: Start difference. First operand 1642 states and 5583 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:04,677 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-06-06 00:01:05,090 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-06-06 00:01:05,253 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-06-06 00:01:05,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:05,452 INFO L93 Difference]: Finished difference Result 3238 states and 10236 transitions. [2021-06-06 00:01:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:01:05,452 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:05,457 INFO L225 Difference]: With dead ends: 3238 [2021-06-06 00:01:05,457 INFO L226 Difference]: Without dead ends: 3208 [2021-06-06 00:01:05,457 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 3102.1ms TimeCoverageRelationStatistics Valid=689, Invalid=3733, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:01:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-06-06 00:01:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1691. [2021-06-06 00:01:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.4005917159763315) internal successors, (5747), 1690 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 5747 transitions. [2021-06-06 00:01:05,485 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 5747 transitions. Word has length 26 [2021-06-06 00:01:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:05,485 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 5747 transitions. [2021-06-06 00:01:05,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 5747 transitions. [2021-06-06 00:01:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:05,487 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:05,487 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:05,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1727,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:05,688 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1125767463, now seen corresponding path program 25 times [2021-06-06 00:01:05,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:05,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488505180] [2021-06-06 00:01:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:06,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:06,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488505180] [2021-06-06 00:01:06,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488505180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:06,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119041825] [2021-06-06 00:01:06,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:06,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:01:06,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:06,345 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-06 00:01:06,561 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_134, v_prenex_135]} [2021-06-06 00:01:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:06,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:01:06,567 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:06,673 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-06-06 00:01:06,674 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-06 00:01:06,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:06,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:06,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:01:06,679 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:06,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:06,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:06,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:06,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:01:06,704 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:06,723 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:06,725 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:01:06,725 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-06 00:01:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:06,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119041825] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:06,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:06,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:01:06,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018026065] [2021-06-06 00:01:06,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:06,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:06,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:06,759 INFO L87 Difference]: Start difference. First operand 1691 states and 5747 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:07,671 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-06 00:01:07,799 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-06 00:01:08,016 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-06 00:01:08,259 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-06-06 00:01:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:08,483 INFO L93 Difference]: Finished difference Result 2561 states and 8224 transitions. [2021-06-06 00:01:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:01:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:08,487 INFO L225 Difference]: With dead ends: 2561 [2021-06-06 00:01:08,487 INFO L226 Difference]: Without dead ends: 2516 [2021-06-06 00:01:08,487 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1903.4ms TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:01:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-06-06 00:01:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1720. [2021-06-06 00:01:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 3.414194299011053) internal successors, (5869), 1719 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 5869 transitions. [2021-06-06 00:01:08,511 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 5869 transitions. Word has length 26 [2021-06-06 00:01:08,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:08,511 INFO L482 AbstractCegarLoop]: Abstraction has 1720 states and 5869 transitions. [2021-06-06 00:01:08,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 5869 transitions. [2021-06-06 00:01:08,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:08,513 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:08,513 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:08,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1861 [2021-06-06 00:01:08,714 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -491765317, now seen corresponding path program 26 times [2021-06-06 00:01:08,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:08,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271030432] [2021-06-06 00:01:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:08,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:08,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271030432] [2021-06-06 00:01:08,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271030432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:08,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300014733] [2021-06-06 00:01:08,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:08,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:08,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:08,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:01:08,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:09,319 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:01:09,474 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:09,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:01:09,479 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:09,844 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-06-06 00:01:09,844 INFO L628 ElimStorePlain]: treesize reduction 130, result has 76.3 percent of original size [2021-06-06 00:01:09,865 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:09,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:01:09,868 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:09,878 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:01:09,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:09,880 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,153 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2021-06-06 00:01:10,153 INFO L628 ElimStorePlain]: treesize reduction 23, result has 94.1 percent of original size [2021-06-06 00:01:10,174 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:01:10,176 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,188 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:01:10,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:01:10,189 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,308 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-06 00:01:10,308 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,329 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:10,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:01:10,333 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,442 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:01:10,442 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,461 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:01:10,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:01:10,462 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,569 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:01:10,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,589 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:10,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:01:10,590 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,708 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:01:10,708 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,725 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:01:10,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:01:10,727 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,829 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-06 00:01:10,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,846 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:10,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:01:10,850 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:10,956 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:01:10,957 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:10,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:01:10,970 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:350 [2021-06-06 00:01:11,101 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-06 00:01:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:11,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300014733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:11,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:11,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:01:11,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736392407] [2021-06-06 00:01:11,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:01:11,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:11,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:01:11,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:01:11,253 INFO L87 Difference]: Start difference. First operand 1720 states and 5869 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:12,441 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-06 00:01:12,570 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-06-06 00:01:13,064 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-06-06 00:01:13,253 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-06 00:01:13,623 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-06 00:01:14,000 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2021-06-06 00:01:14,193 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-06 00:01:14,599 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2021-06-06 00:01:15,159 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2021-06-06 00:01:15,607 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-06-06 00:01:16,108 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2021-06-06 00:01:16,692 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-06-06 00:01:17,419 WARN L205 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2021-06-06 00:01:18,030 WARN L205 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2021-06-06 00:01:18,879 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2021-06-06 00:01:19,074 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2021-06-06 00:01:19,677 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2021-06-06 00:01:20,327 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-06-06 00:01:20,720 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2021-06-06 00:01:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:20,807 INFO L93 Difference]: Finished difference Result 3224 states and 10085 transitions. [2021-06-06 00:01:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:01:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:20,812 INFO L225 Difference]: With dead ends: 3224 [2021-06-06 00:01:20,812 INFO L226 Difference]: Without dead ends: 3167 [2021-06-06 00:01:20,812 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 9302.9ms TimeCoverageRelationStatistics Valid=578, Invalid=2614, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:01:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-06-06 00:01:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 1704. [2021-06-06 00:01:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.405754550792719) internal successors, (5800), 1703 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5800 transitions. [2021-06-06 00:01:20,839 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 5800 transitions. Word has length 26 [2021-06-06 00:01:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:20,839 INFO L482 AbstractCegarLoop]: Abstraction has 1704 states and 5800 transitions. [2021-06-06 00:01:20,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 5800 transitions. [2021-06-06 00:01:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:20,841 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:20,841 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:21,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1873 [2021-06-06 00:01:21,043 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:21,044 INFO L82 PathProgramCache]: Analyzing trace with hash 745320095, now seen corresponding path program 46 times [2021-06-06 00:01:21,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:21,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824078124] [2021-06-06 00:01:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:21,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:21,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824078124] [2021-06-06 00:01:21,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824078124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:21,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785904213] [2021-06-06 00:01:21,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:21,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:21,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:21,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:01:21,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:21,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:01:21,794 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:01:21,802 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:01:21,809 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:01:21,817 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:01:21,828 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:01:21,836 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:01:21,845 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:21,853 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:01:21,861 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:01:21,869 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:01:21,877 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:01:21,884 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:01:21,892 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:21,900 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:21,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:21,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:01:21,906 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:21,926 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:01:21,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:01:21,928 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:01:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:21,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785904213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:21,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:21,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:01:21,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232275184] [2021-06-06 00:01:21,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:01:21,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:01:21,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:01:21,955 INFO L87 Difference]: Start difference. First operand 1704 states and 5800 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:23,647 INFO L93 Difference]: Finished difference Result 3325 states and 10680 transitions. [2021-06-06 00:01:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 00:01:23,648 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:23,652 INFO L225 Difference]: With dead ends: 3325 [2021-06-06 00:01:23,653 INFO L226 Difference]: Without dead ends: 3289 [2021-06-06 00:01:23,653 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1611.0ms TimeCoverageRelationStatistics Valid=497, Invalid=2259, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:01:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-06-06 00:01:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 1811. [2021-06-06 00:01:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.422099447513812) internal successors, (6194), 1810 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6194 transitions. [2021-06-06 00:01:23,683 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6194 transitions. Word has length 26 [2021-06-06 00:01:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:23,683 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6194 transitions. [2021-06-06 00:01:23,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6194 transitions. [2021-06-06 00:01:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:23,686 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:23,686 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:23,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1909 [2021-06-06 00:01:23,886 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:23,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1715998549, now seen corresponding path program 47 times [2021-06-06 00:01:23,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:23,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898013244] [2021-06-06 00:01:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:24,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:24,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898013244] [2021-06-06 00:01:24,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898013244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:24,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810812476] [2021-06-06 00:01:24,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:24,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:01:24,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:01:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:24,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,565 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:01:24,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:01:24,569 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,583 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:01:24,584 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,597 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:01:24,598 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,612 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:01:24,613 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,639 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:01:24,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-06-06 00:01:24,640 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,673 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:01:24,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:01:24,678 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,693 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:01:24,694 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:24,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:01:24,723 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,744 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:01:24,745 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,769 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:01:24,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:01:24,771 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,787 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:01:24,788 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,804 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:01:24,809 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,824 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:01:24,825 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,840 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:01:24,841 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,862 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-06-06 00:01:24,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 23 [2021-06-06 00:01:24,863 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:24,871 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:01:24,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:01:24,872 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:24,949 INFO L628 ElimStorePlain]: treesize reduction 24, result has 79.5 percent of original size [2021-06-06 00:01:24,951 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:01:24,951 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-06 00:01:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:25,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810812476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:25,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:25,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:01:25,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534812078] [2021-06-06 00:01:25,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:01:25,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:25,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:01:25,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:01:25,053 INFO L87 Difference]: Start difference. First operand 1811 states and 6194 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:27,378 INFO L93 Difference]: Finished difference Result 3806 states and 12114 transitions. [2021-06-06 00:01:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:01:27,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:27,384 INFO L225 Difference]: With dead ends: 3806 [2021-06-06 00:01:27,384 INFO L226 Difference]: Without dead ends: 3749 [2021-06-06 00:01:27,384 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2188.7ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:01:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2021-06-06 00:01:27,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 1846. [2021-06-06 00:01:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 3.430894308943089) internal successors, (6330), 1845 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 6330 transitions. [2021-06-06 00:01:27,415 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 6330 transitions. Word has length 26 [2021-06-06 00:01:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:27,415 INFO L482 AbstractCegarLoop]: Abstraction has 1846 states and 6330 transitions. [2021-06-06 00:01:27,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 6330 transitions. [2021-06-06 00:01:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:27,417 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:27,418 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:27,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1999,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:27,618 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash 701456227, now seen corresponding path program 27 times [2021-06-06 00:01:27,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:27,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886971668] [2021-06-06 00:01:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:27,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:27,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886971668] [2021-06-06 00:01:27,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886971668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:27,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234520132] [2021-06-06 00:01:27,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:27,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:01:27,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:27,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:01:27,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:28,344 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:01:28,547 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-06 00:01:28,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:28,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:01:28,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:28,735 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:01:28,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:01:28,735 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,039 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2021-06-06 00:01:29,040 INFO L628 ElimStorePlain]: treesize reduction 120, result has 76.0 percent of original size [2021-06-06 00:01:29,061 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:29,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:01:29,062 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,201 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:01:29,201 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:29,222 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:29,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:01:29,225 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,360 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:01:29,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:29,379 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:01:29,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:01:29,380 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,511 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:01:29,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:29,530 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:29,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:01:29,532 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,541 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:01:29,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:29,542 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,783 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2021-06-06 00:01:29,783 INFO L628 ElimStorePlain]: treesize reduction 23, result has 92.7 percent of original size [2021-06-06 00:01:29,798 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:29,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:01:29,803 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:29,907 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:01:29,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:29,924 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:01:29,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:01:29,926 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:30,053 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:01:30,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:30,073 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:30,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:01:30,076 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:30,183 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-06 00:01:30,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:30,215 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:01:30,215 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:347 [2021-06-06 00:01:30,373 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-06-06 00:01:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:30,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234520132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:30,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:30,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:01:30,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242336976] [2021-06-06 00:01:30,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:01:30,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:30,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:01:30,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:01:30,422 INFO L87 Difference]: Start difference. First operand 1846 states and 6330 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:31,601 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-06 00:01:31,806 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:01:32,003 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-06 00:01:32,269 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-06 00:01:32,792 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 121 [2021-06-06 00:01:33,212 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2021-06-06 00:01:33,774 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2021-06-06 00:01:34,476 WARN L205 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 139 [2021-06-06 00:01:35,058 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 116 [2021-06-06 00:01:35,307 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 79 [2021-06-06 00:01:36,219 WARN L205 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 133 [2021-06-06 00:01:36,643 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 81 [2021-06-06 00:01:36,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:36,917 INFO L93 Difference]: Finished difference Result 2649 states and 8646 transitions. [2021-06-06 00:01:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-06 00:01:36,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:36,921 INFO L225 Difference]: With dead ends: 2649 [2021-06-06 00:01:36,921 INFO L226 Difference]: Without dead ends: 2604 [2021-06-06 00:01:36,922 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 6378.8ms TimeCoverageRelationStatistics Valid=351, Invalid=2001, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:01:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-06-06 00:01:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1868. [2021-06-06 00:01:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 3.430637386181039) internal successors, (6405), 1867 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 6405 transitions. [2021-06-06 00:01:36,957 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 6405 transitions. Word has length 26 [2021-06-06 00:01:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:36,957 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 6405 transitions. [2021-06-06 00:01:36,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 6405 transitions. [2021-06-06 00:01:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:36,959 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:36,959 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:37,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2104 [2021-06-06 00:01:37,160 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1121995759, now seen corresponding path program 28 times [2021-06-06 00:01:37,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:37,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391307761] [2021-06-06 00:01:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:37,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:37,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391307761] [2021-06-06 00:01:37,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391307761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:37,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327764921] [2021-06-06 00:01:37,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:37,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:37,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:37,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:01:37,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:37,847 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2021-06-06 00:01:37,967 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_174, v_prenex_175, v_prenex_176, v_prenex_177], 3=[A]} [2021-06-06 00:01:37,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:37,984 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:37,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:01:37,986 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:37,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:37,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:37,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:01:38,003 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,341 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2021-06-06 00:01:38,341 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.7 percent of original size [2021-06-06 00:01:38,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:01:38,359 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,371 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:38,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:01:38,373 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,524 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-06 00:01:38,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,538 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:38,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:01:38,540 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:01:38,554 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,673 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:01:38,673 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:01:38,688 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,698 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:38,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:01:38,699 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,808 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-06 00:01:38,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,820 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-06 00:01:38,824 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:38,832 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:01:38,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-06 00:01:38,834 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:38,931 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:38,936 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:01:38,936 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:421, output treesize:185 [2021-06-06 00:01:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:39,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327764921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:39,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:39,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:01:39,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002136029] [2021-06-06 00:01:39,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:39,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:39,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:39,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:39,065 INFO L87 Difference]: Start difference. First operand 1868 states and 6405 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:40,201 INFO L93 Difference]: Finished difference Result 2435 states and 8167 transitions. [2021-06-06 00:01:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:01:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:40,205 INFO L225 Difference]: With dead ends: 2435 [2021-06-06 00:01:40,205 INFO L226 Difference]: Without dead ends: 2410 [2021-06-06 00:01:40,205 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1434.9ms TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:01:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-06-06 00:01:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1870. [2021-06-06 00:01:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 3.42964151952916) internal successors, (6410), 1869 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 6410 transitions. [2021-06-06 00:01:40,229 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 6410 transitions. Word has length 26 [2021-06-06 00:01:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:40,229 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 6410 transitions. [2021-06-06 00:01:40,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 6410 transitions. [2021-06-06 00:01:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:40,231 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:40,231 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:40,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2141,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:40,432 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:40,432 INFO L82 PathProgramCache]: Analyzing trace with hash 654380625, now seen corresponding path program 29 times [2021-06-06 00:01:40,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:40,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404002771] [2021-06-06 00:01:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:40,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:40,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404002771] [2021-06-06 00:01:40,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404002771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:40,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987073505] [2021-06-06 00:01:40,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:40,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:01:40,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:40,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:01:40,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:41,329 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-06 00:01:41,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:41,436 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:41,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:01:41,437 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:41,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:41,450 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:41,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-06 00:01:41,451 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:41,783 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2021-06-06 00:01:41,784 INFO L628 ElimStorePlain]: treesize reduction 72, result has 84.8 percent of original size [2021-06-06 00:01:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:41,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:41,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:01:41,802 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:41,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:41,812 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:41,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:41,813 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,082 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2021-06-06 00:01:42,083 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.2 percent of original size [2021-06-06 00:01:42,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,095 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:42,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:01:42,096 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,222 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:01:42,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,234 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:42,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:01:42,236 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,355 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:01:42,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:01:42,370 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,485 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:01:42,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,496 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:42,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:01:42,497 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,609 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-06 00:01:42,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:01:42,622 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,745 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-06 00:01:42,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,759 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:01:42,760 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:42,769 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:42,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:01:42,770 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:42,853 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:42,860 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:01:42,861 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:539, output treesize:156 [2021-06-06 00:01:43,014 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-06-06 00:01:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:43,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987073505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:43,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:43,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:01:43,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123229017] [2021-06-06 00:01:43,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:01:43,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:43,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:01:43,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:01:43,052 INFO L87 Difference]: Start difference. First operand 1870 states and 6410 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:43,933 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-06-06 00:01:44,333 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-06 00:01:44,585 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-06 00:01:44,787 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-06 00:01:45,035 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-06 00:01:45,262 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:01:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:45,454 INFO L93 Difference]: Finished difference Result 2744 states and 8990 transitions. [2021-06-06 00:01:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:01:45,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:45,458 INFO L225 Difference]: With dead ends: 2744 [2021-06-06 00:01:45,458 INFO L226 Difference]: Without dead ends: 2710 [2021-06-06 00:01:45,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2812.3ms TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:01:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-06-06 00:01:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1870. [2021-06-06 00:01:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 3.4307116104868913) internal successors, (6412), 1869 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 6412 transitions. [2021-06-06 00:01:45,483 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 6412 transitions. Word has length 26 [2021-06-06 00:01:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:45,483 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 6412 transitions. [2021-06-06 00:01:45,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 6412 transitions. [2021-06-06 00:01:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:45,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:45,485 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:45,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2178 [2021-06-06 00:01:45,686 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash -275202939, now seen corresponding path program 48 times [2021-06-06 00:01:45,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:45,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51910849] [2021-06-06 00:01:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:45,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:45,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51910849] [2021-06-06 00:01:45,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51910849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:45,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281793875] [2021-06-06 00:01:45,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:46,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:01:46,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:46,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:01:46,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:46,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:01:46,497 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:01:46,505 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:01:46,513 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:01:46,528 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:46,536 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:01:46,544 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:46,552 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:01:46,560 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:01:46,568 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:01:46,576 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:01:46,584 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:01:46,592 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:01:46,600 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:01:46,608 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:46,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:46,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:01:46,612 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:46,631 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:01:46,632 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:01:46,632 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:01:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:46,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281793875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:46,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:46,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:01:46,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067702768] [2021-06-06 00:01:46,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:01:46,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:46,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:01:46,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:01:46,656 INFO L87 Difference]: Start difference. First operand 1870 states and 6412 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:48,179 INFO L93 Difference]: Finished difference Result 2342 states and 7805 transitions. [2021-06-06 00:01:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:01:48,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:48,182 INFO L225 Difference]: With dead ends: 2342 [2021-06-06 00:01:48,182 INFO L226 Difference]: Without dead ends: 2320 [2021-06-06 00:01:48,182 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1593.9ms TimeCoverageRelationStatistics Valid=359, Invalid=1533, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:01:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-06-06 00:01:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1866. [2021-06-06 00:01:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.429490616621984) internal successors, (6396), 1865 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6396 transitions. [2021-06-06 00:01:48,205 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6396 transitions. Word has length 26 [2021-06-06 00:01:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:48,205 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6396 transitions. [2021-06-06 00:01:48,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6396 transitions. [2021-06-06 00:01:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:48,207 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:48,208 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:48,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2205 [2021-06-06 00:01:48,408 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:48,408 INFO L82 PathProgramCache]: Analyzing trace with hash 650290927, now seen corresponding path program 49 times [2021-06-06 00:01:48,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:48,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062028313] [2021-06-06 00:01:48,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:48,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:48,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062028313] [2021-06-06 00:01:48,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062028313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:48,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474351844] [2021-06-06 00:01:48,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:48,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:01:48,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:48,990 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_196], 5=[v_prenex_198, v_prenex_200]} [2021-06-06 00:01:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:48,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:48,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:48,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:48,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:01:48,998 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:49,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:49,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:49,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:01:49,013 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:49,080 INFO L628 ElimStorePlain]: treesize reduction 130, result has 40.1 percent of original size [2021-06-06 00:01:49,081 INFO L518 ElimStorePlain]: Eliminatee v_prenex_196 vanished before elimination [2021-06-06 00:01:49,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:49,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:49,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:49,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:01:49,086 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:49,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:49,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:49,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:49,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:49,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:49,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:01:49,112 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:49,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:49,131 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:01:49,131 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:29 [2021-06-06 00:01:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:49,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474351844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:49,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:49,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:01:49,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137631178] [2021-06-06 00:01:49,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:49,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:49,168 INFO L87 Difference]: Start difference. First operand 1866 states and 6396 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:50,524 INFO L93 Difference]: Finished difference Result 2566 states and 8529 transitions. [2021-06-06 00:01:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:01:50,524 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:50,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:50,528 INFO L225 Difference]: With dead ends: 2566 [2021-06-06 00:01:50,528 INFO L226 Difference]: Without dead ends: 2551 [2021-06-06 00:01:50,528 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1320.4ms TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:01:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-06-06 00:01:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1866. [2021-06-06 00:01:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.429490616621984) internal successors, (6396), 1865 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6396 transitions. [2021-06-06 00:01:50,551 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6396 transitions. Word has length 26 [2021-06-06 00:01:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:50,552 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6396 transitions. [2021-06-06 00:01:50,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6396 transitions. [2021-06-06 00:01:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:50,554 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:50,554 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:50,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2301 [2021-06-06 00:01:50,754 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:50,755 INFO L82 PathProgramCache]: Analyzing trace with hash -527613613, now seen corresponding path program 50 times [2021-06-06 00:01:50,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:50,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71521213] [2021-06-06 00:01:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:50,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:50,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71521213] [2021-06-06 00:01:50,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71521213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:50,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700144140] [2021-06-06 00:01:50,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:51,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:51,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:51,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:01:51,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:51,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,242 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-06 00:01:51,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-06 00:01:51,246 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,268 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-06 00:01:51,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-06 00:01:51,269 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,296 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-06 00:01:51,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-06-06 00:01:51,300 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,314 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:01:51,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:01:51,314 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,338 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-06 00:01:51,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-06 00:01:51,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,366 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-06 00:01:51,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 29 [2021-06-06 00:01:51,367 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,389 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-06 00:01:51,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-06 00:01:51,390 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,406 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:01:51,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:01:51,407 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,428 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:01:51,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:01:51,428 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,451 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-06 00:01:51,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 26 [2021-06-06 00:01:51,453 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,479 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-06 00:01:51,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 26 [2021-06-06 00:01:51,480 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,496 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:01:51,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:01:51,496 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,511 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:01:51,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:01:51,512 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,533 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:51,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2021-06-06 00:01:51,539 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,560 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-06 00:01:51,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-06 00:01:51,561 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:51,570 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:01:51,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:01:51,570 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:51,645 INFO L628 ElimStorePlain]: treesize reduction 109, result has 41.7 percent of original size [2021-06-06 00:01:51,646 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:01:51,646 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:78 [2021-06-06 00:01:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:51,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700144140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:51,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:51,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-06-06 00:01:51,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593604299] [2021-06-06 00:01:51,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:01:51,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:01:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:01:51,724 INFO L87 Difference]: Start difference. First operand 1866 states and 6396 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:53,288 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-06 00:01:53,569 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2021-06-06 00:01:54,238 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-06-06 00:01:55,724 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-06 00:01:56,376 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-06 00:01:56,632 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-06-06 00:01:57,009 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-06 00:01:57,436 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-06 00:01:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:57,919 INFO L93 Difference]: Finished difference Result 3357 states and 10803 transitions. [2021-06-06 00:01:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-06 00:01:57,920 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:01:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:57,924 INFO L225 Difference]: With dead ends: 3357 [2021-06-06 00:01:57,924 INFO L226 Difference]: Without dead ends: 3310 [2021-06-06 00:01:57,925 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2979 ImplicationChecksByTransitivity, 5276.1ms TimeCoverageRelationStatistics Valid=1266, Invalid=7106, Unknown=0, NotChecked=0, Total=8372 [2021-06-06 00:01:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2021-06-06 00:01:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 1970. [2021-06-06 00:01:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 3.420518029456577) internal successors, (6735), 1969 states have internal predecessors, (6735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 6735 transitions. [2021-06-06 00:01:57,954 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 6735 transitions. Word has length 26 [2021-06-06 00:01:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:57,955 INFO L482 AbstractCegarLoop]: Abstraction has 1970 states and 6735 transitions. [2021-06-06 00:01:57,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 6735 transitions. [2021-06-06 00:01:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:57,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:57,957 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:01:58,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2315,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:58,160 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:58,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2073850769, now seen corresponding path program 51 times [2021-06-06 00:01:58,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:58,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705926627] [2021-06-06 00:01:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:58,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:58,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705926627] [2021-06-06 00:01:58,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705926627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:58,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125606198] [2021-06-06 00:01:58,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:58,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:01:58,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:58,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:01:58,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:00,835 WARN L205 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 54 [2021-06-06 00:02:01,016 INFO L446 ElimStorePlain]: Different costs {5=[v_prenex_206, v_prenex_208, v_prenex_210, v_prenex_212, v_prenex_202, v_prenex_214], 6=[A, v_prenex_204]} [2021-06-06 00:02:01,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:01,072 INFO L354 Elim1Store]: treesize reduction 20, result has 45.9 percent of original size [2021-06-06 00:02:01,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 32 [2021-06-06 00:02:01,074 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:01,114 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-06-06 00:02:01,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 39 [2021-06-06 00:02:01,117 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:01,543 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-06 00:02:01,543 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:01,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:01,591 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-06 00:02:01,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 43 [2021-06-06 00:02:01,595 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:01,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:01,628 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-06-06 00:02:01,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 36 [2021-06-06 00:02:01,642 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:02,008 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-06 00:02:02,009 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:02,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:02,048 INFO L354 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2021-06-06 00:02:02,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 34 [2021-06-06 00:02:02,051 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:02,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:02,092 INFO L354 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2021-06-06 00:02:02,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2021-06-06 00:02:02,095 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:02,446 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-06 00:02:02,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:02,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:02,492 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-06 00:02:02,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 43 [2021-06-06 00:02:02,496 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:02,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:02,526 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:02,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 55 [2021-06-06 00:02:02,534 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:03,576 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2021-06-06 00:02:03,577 INFO L628 ElimStorePlain]: treesize reduction 72, result has 90.2 percent of original size [2021-06-06 00:02:03,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:03,610 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:03,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 55 [2021-06-06 00:02:03,616 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:03,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:03,650 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-06 00:02:03,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 43 [2021-06-06 00:02:03,654 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:04,276 WARN L205 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2021-06-06 00:02:04,277 INFO L628 ElimStorePlain]: treesize reduction 34, result has 94.9 percent of original size [2021-06-06 00:02:04,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,315 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-06 00:02:04,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 43 [2021-06-06 00:02:04,319 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,343 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-06-06 00:02:04,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 28 [2021-06-06 00:02:04,344 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:04,623 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-06 00:02:04,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:04,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,657 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-06 00:02:04,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 38 [2021-06-06 00:02:04,661 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:04,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,676 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:02:04,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:02:04,676 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:04,920 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-06 00:02:04,920 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,954 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-06 00:02:04,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 38 [2021-06-06 00:02:04,958 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:04,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:04,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:04,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 53 [2021-06-06 00:02:04,989 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:05,217 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:02:05,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:05,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 14 xjuncts. [2021-06-06 00:02:05,240 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:829, output treesize:777 [2021-06-06 00:02:05,609 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2021-06-06 00:02:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:05,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125606198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:05,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:05,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-06 00:02:05,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395230925] [2021-06-06 00:02:05,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:02:05,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:05,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:02:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:02:05,759 INFO L87 Difference]: Start difference. First operand 1970 states and 6735 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:06,757 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-06 00:02:07,367 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2021-06-06 00:02:07,815 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-06-06 00:02:08,609 WARN L205 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-06 00:02:08,861 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-06 00:02:11,549 WARN L205 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-06-06 00:02:11,757 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-06 00:02:11,935 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-06 00:02:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:12,394 INFO L93 Difference]: Finished difference Result 3232 states and 10559 transitions. [2021-06-06 00:02:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:02:12,394 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:12,399 INFO L225 Difference]: With dead ends: 3232 [2021-06-06 00:02:12,399 INFO L226 Difference]: Without dead ends: 3187 [2021-06-06 00:02:12,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 9008.0ms TimeCoverageRelationStatistics Valid=609, Invalid=2931, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:02:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2021-06-06 00:02:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 2005. [2021-06-06 00:02:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 3.4266467065868262) internal successors, (6867), 2004 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 6867 transitions. [2021-06-06 00:02:12,427 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 6867 transitions. Word has length 26 [2021-06-06 00:02:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:12,427 INFO L482 AbstractCegarLoop]: Abstraction has 2005 states and 6867 transitions. [2021-06-06 00:02:12,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 6867 transitions. [2021-06-06 00:02:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:12,429 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:12,429 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:12,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2344 [2021-06-06 00:02:12,630 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:12,630 INFO L82 PathProgramCache]: Analyzing trace with hash 436262311, now seen corresponding path program 52 times [2021-06-06 00:02:12,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:12,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205750309] [2021-06-06 00:02:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:12,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:12,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205750309] [2021-06-06 00:02:12,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205750309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:12,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016185785] [2021-06-06 00:02:12,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:12,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:12,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:12,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:02:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:13,355 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_226], 5=[v_prenex_222, v_prenex_224]} [2021-06-06 00:02:13,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:13,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:13,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:13,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:13,362 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:13,447 INFO L628 ElimStorePlain]: treesize reduction 137, result has 41.9 percent of original size [2021-06-06 00:02:13,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:13,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:13,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:13,452 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:13,478 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:13,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:13,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:13,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:02:13,483 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:13,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:13,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:13,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:13,509 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:13,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:13,529 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:02:13,529 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:22 [2021-06-06 00:02:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:13,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016185785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:13,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:13,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:02:13,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359012517] [2021-06-06 00:02:13,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:02:13,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:13,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:02:13,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:02:13,564 INFO L87 Difference]: Start difference. First operand 2005 states and 6867 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:15,602 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-06-06 00:02:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:16,165 INFO L93 Difference]: Finished difference Result 2655 states and 8819 transitions. [2021-06-06 00:02:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:02:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:16,169 INFO L225 Difference]: With dead ends: 2655 [2021-06-06 00:02:16,169 INFO L226 Difference]: Without dead ends: 2640 [2021-06-06 00:02:16,170 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2362.5ms TimeCoverageRelationStatistics Valid=482, Invalid=2170, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:02:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-06-06 00:02:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2003. [2021-06-06 00:02:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4265734265734267) internal successors, (6860), 2002 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6860 transitions. [2021-06-06 00:02:16,193 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6860 transitions. Word has length 26 [2021-06-06 00:02:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:16,193 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6860 transitions. [2021-06-06 00:02:16,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6860 transitions. [2021-06-06 00:02:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:16,196 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:16,196 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:16,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2429,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:16,396 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2135160291, now seen corresponding path program 53 times [2021-06-06 00:02:16,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:16,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397699029] [2021-06-06 00:02:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:16,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:16,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397699029] [2021-06-06 00:02:16,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397699029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:16,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029509251] [2021-06-06 00:02:16,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:16,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:02:16,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:16,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:02:16,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:17,032 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-06 00:02:17,214 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:02:17,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,433 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:02:17,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:02:17,435 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:17,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:02:17,467 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:17,848 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-06-06 00:02:17,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:17,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,883 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:02:17,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:02:17,884 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:17,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:17,913 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:02:17,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:02:17,917 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:18,589 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2021-06-06 00:02:18,590 INFO L628 ElimStorePlain]: treesize reduction 29, result has 95.9 percent of original size [2021-06-06 00:02:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:18,628 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:02:18,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-06 00:02:18,632 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:18,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:18,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:18,658 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:02:18,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-06 00:02:18,660 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:18,960 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-06 00:02:18,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:18,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:18,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:18,995 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:02:18,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:02:18,999 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:19,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,036 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-06 00:02:19,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:02:19,040 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:19,364 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:02:19,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:19,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,399 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:02:19,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-06 00:02:19,401 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,424 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:02:19,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:02:19,426 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:19,682 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-06 00:02:19,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:19,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,721 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:02:19,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-06 00:02:19,723 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:19,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,745 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:02:19,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-06 00:02:19,747 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:19,988 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:02:19,988 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:19,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,020 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:02:20,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:02:20,022 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,045 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:02:20,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:02:20,049 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:20,469 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2021-06-06 00:02:20,470 INFO L628 ElimStorePlain]: treesize reduction 29, result has 93.8 percent of original size [2021-06-06 00:02:20,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,499 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:20,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:02:20,506 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:20,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:20,519 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:02:20,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:02:20,520 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:20,705 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:02:20,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:20,718 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-06 00:02:20,718 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:793, output treesize:352 [2021-06-06 00:02:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:20,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029509251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:20,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:20,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-06 00:02:20,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454058539] [2021-06-06 00:02:20,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:02:20,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:02:20,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:02:20,899 INFO L87 Difference]: Start difference. First operand 2003 states and 6860 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:28,850 WARN L205 SmtUtils]: Spent 6.53 s on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-06 00:02:31,622 WARN L205 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-06-06 00:02:32,871 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 173 DAG size of output: 115 [2021-06-06 00:02:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:33,407 INFO L93 Difference]: Finished difference Result 2890 states and 9570 transitions. [2021-06-06 00:02:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 00:02:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:33,411 INFO L225 Difference]: With dead ends: 2890 [2021-06-06 00:02:33,411 INFO L226 Difference]: Without dead ends: 2860 [2021-06-06 00:02:33,411 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 12712.1ms TimeCoverageRelationStatistics Valid=522, Invalid=2448, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 00:02:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-06-06 00:02:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2003. [2021-06-06 00:02:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4265734265734267) internal successors, (6860), 2002 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6860 transitions. [2021-06-06 00:02:33,439 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6860 transitions. Word has length 26 [2021-06-06 00:02:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:33,439 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6860 transitions. [2021-06-06 00:02:33,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6860 transitions. [2021-06-06 00:02:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:33,441 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:33,441 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:33,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2443 [2021-06-06 00:02:33,642 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1001444339, now seen corresponding path program 54 times [2021-06-06 00:02:33,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:33,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152672428] [2021-06-06 00:02:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:33,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:33,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152672428] [2021-06-06 00:02:33,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152672428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:33,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736424526] [2021-06-06 00:02:33,874 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:33,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:02:33,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:33,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:02:33,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,126 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:02:34,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2021-06-06 00:02:34,130 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,153 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:34,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-06 00:02:34,160 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,183 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-06 00:02:34,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-06-06 00:02:34,184 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,199 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:02:34,200 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,223 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:02:34,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:34,224 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,239 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:02:34,240 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,255 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:02:34,255 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,270 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:02:34,271 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,294 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:02:34,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:34,296 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,311 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:02:34,311 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,335 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:02:34,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:02:34,339 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,361 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:02:34,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:02:34,363 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,380 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:02:34,380 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,394 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:02:34,395 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,408 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:02:34,409 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:34,416 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:02:34,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:02:34,417 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:34,484 INFO L628 ElimStorePlain]: treesize reduction 42, result has 65.0 percent of original size [2021-06-06 00:02:34,485 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:02:34,485 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:657, output treesize:78 [2021-06-06 00:02:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:34,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736424526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:34,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:34,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:02:34,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278419955] [2021-06-06 00:02:34,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:02:34,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:02:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:02:34,578 INFO L87 Difference]: Start difference. First operand 2003 states and 6860 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:35,947 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2021-06-06 00:02:36,885 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-06 00:02:37,120 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-06-06 00:02:37,366 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-06 00:02:37,682 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-06-06 00:02:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:38,315 INFO L93 Difference]: Finished difference Result 3566 states and 11484 transitions. [2021-06-06 00:02:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:02:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:38,320 INFO L225 Difference]: With dead ends: 3566 [2021-06-06 00:02:38,320 INFO L226 Difference]: Without dead ends: 3532 [2021-06-06 00:02:38,320 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 3458.6ms TimeCoverageRelationStatistics Valid=879, Invalid=3153, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:02:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-06-06 00:02:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 2009. [2021-06-06 00:02:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.431772908366534) internal successors, (6891), 2008 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6891 transitions. [2021-06-06 00:02:38,352 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6891 transitions. Word has length 26 [2021-06-06 00:02:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:38,352 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 6891 transitions. [2021-06-06 00:02:38,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6891 transitions. [2021-06-06 00:02:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:38,355 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:38,355 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:38,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2509,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:38,555 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:38,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:38,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1556883255, now seen corresponding path program 30 times [2021-06-06 00:02:38,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:38,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846617084] [2021-06-06 00:02:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:38,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:38,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846617084] [2021-06-06 00:02:38,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846617084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:38,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614251899] [2021-06-06 00:02:38,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:38,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:02:38,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:38,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:02:38,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:39,054 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:02:39,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:02:39,057 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,066 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:39,066 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,075 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:39,076 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,095 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:02:39,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:02:39,097 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,113 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:39,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:02:39,117 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,135 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:02:39,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:02:39,136 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,145 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:39,146 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,162 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:39,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:02:39,166 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,175 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:39,176 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,185 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:39,186 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,203 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:02:39,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:39,204 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,226 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:02:39,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:02:39,229 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,240 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2021-06-06 00:02:39,241 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,250 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:39,250 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,258 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:39,259 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,265 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:02:39,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:39,265 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:39,389 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-06-06 00:02:39,389 INFO L628 ElimStorePlain]: treesize reduction 33, result has 82.1 percent of original size [2021-06-06 00:02:39,392 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:02:39,392 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:697, output treesize:177 [2021-06-06 00:02:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:39,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614251899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:39,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:39,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-06 00:02:39,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962113810] [2021-06-06 00:02:39,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:02:39,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:39,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:02:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:02:39,566 INFO L87 Difference]: Start difference. First operand 2009 states and 6891 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:40,424 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-06-06 00:02:41,171 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-06-06 00:02:41,334 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-06-06 00:02:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:41,367 INFO L93 Difference]: Finished difference Result 2493 states and 8335 transitions. [2021-06-06 00:02:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:02:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:41,370 INFO L225 Difference]: With dead ends: 2493 [2021-06-06 00:02:41,371 INFO L226 Difference]: Without dead ends: 2478 [2021-06-06 00:02:41,371 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1743.6ms TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:02:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-06-06 00:02:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2002. [2021-06-06 00:02:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 3.4302848575712144) internal successors, (6864), 2001 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 6864 transitions. [2021-06-06 00:02:41,394 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 6864 transitions. Word has length 26 [2021-06-06 00:02:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:41,395 INFO L482 AbstractCegarLoop]: Abstraction has 2002 states and 6864 transitions. [2021-06-06 00:02:41,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 6864 transitions. [2021-06-06 00:02:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:41,397 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:41,397 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:41,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2537 [2021-06-06 00:02:41,613 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:41,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1386281111, now seen corresponding path program 31 times [2021-06-06 00:02:41,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:41,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114322319] [2021-06-06 00:02:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:41,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:41,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114322319] [2021-06-06 00:02:41,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114322319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:41,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902263837] [2021-06-06 00:02:41,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:41,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:02:41,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:42,129 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-06 00:02:42,335 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-06 00:02:42,395 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_249], 2=[A, v_prenex_250]} [2021-06-06 00:02:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:42,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:02:42,400 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:42,501 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-06-06 00:02:42,502 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-06 00:02:42,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:42,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:42,507 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:42,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:42,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:02:42,511 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:42,560 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-06-06 00:02:42,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:42,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:42,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:42,564 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:42,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:42,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:02:42,586 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-06 00:02:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:42,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902263837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:42,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:42,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:02:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207760226] [2021-06-06 00:02:42,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:02:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:02:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:02:42,623 INFO L87 Difference]: Start difference. First operand 2002 states and 6864 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:43,619 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-06 00:02:43,944 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-06-06 00:02:44,125 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-06-06 00:02:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:44,345 INFO L93 Difference]: Finished difference Result 2918 states and 9622 transitions. [2021-06-06 00:02:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:02:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:44,349 INFO L225 Difference]: With dead ends: 2918 [2021-06-06 00:02:44,349 INFO L226 Difference]: Without dead ends: 2873 [2021-06-06 00:02:44,349 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1816.8ms TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:02:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2021-06-06 00:02:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2019. [2021-06-06 00:02:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 3.4345887016848367) internal successors, (6931), 2018 states have internal predecessors, (6931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 6931 transitions. [2021-06-06 00:02:44,376 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 6931 transitions. Word has length 26 [2021-06-06 00:02:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:44,376 INFO L482 AbstractCegarLoop]: Abstraction has 2019 states and 6931 transitions. [2021-06-06 00:02:44,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 6931 transitions. [2021-06-06 00:02:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:44,379 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:44,379 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:44,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2594,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:44,595 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash -231251669, now seen corresponding path program 32 times [2021-06-06 00:02:44,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:44,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572135427] [2021-06-06 00:02:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:44,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:44,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572135427] [2021-06-06 00:02:44,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572135427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:44,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831310215] [2021-06-06 00:02:44,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:44,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:44,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:44,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:02:44,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:45,104 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-06 00:02:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:45,212 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:02:45,217 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:45,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:45,233 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:02:45,236 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:45,537 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2021-06-06 00:02:45,538 INFO L628 ElimStorePlain]: treesize reduction 131, result has 71.4 percent of original size [2021-06-06 00:02:45,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:45,551 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:45,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:45,552 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:45,670 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:02:45,670 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:45,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:02:45,685 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:45,798 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-06 00:02:45,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:45,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:02:45,814 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:45,918 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-06 00:02:45,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:45,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:45,931 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:45,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:02:45,932 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:46,031 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:46,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:46,043 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:46,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:46,044 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:46,139 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:46,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:46,150 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:46,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:02:46,152 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:46,245 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:46,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:46,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:46,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:46,260 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:46,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:46,268 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:46,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:02:46,269 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:46,340 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:46,345 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:02:46,346 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-06 00:02:46,469 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2021-06-06 00:02:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:46,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831310215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:46,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:46,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:02:46,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524281372] [2021-06-06 00:02:46,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:02:46,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:46,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:02:46,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:02:46,509 INFO L87 Difference]: Start difference. First operand 2019 states and 6931 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:47,407 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-06 00:02:47,564 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-06-06 00:02:47,895 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-06 00:02:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:48,320 INFO L93 Difference]: Finished difference Result 3134 states and 10334 transitions. [2021-06-06 00:02:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:02:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:48,326 INFO L225 Difference]: With dead ends: 3134 [2021-06-06 00:02:48,326 INFO L226 Difference]: Without dead ends: 3104 [2021-06-06 00:02:48,326 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1977.9ms TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:02:48,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-06-06 00:02:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2002. [2021-06-06 00:02:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 3.4292853573213393) internal successors, (6862), 2001 states have internal predecessors, (6862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 6862 transitions. [2021-06-06 00:02:48,355 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 6862 transitions. Word has length 26 [2021-06-06 00:02:48,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:48,355 INFO L482 AbstractCegarLoop]: Abstraction has 2002 states and 6862 transitions. [2021-06-06 00:02:48,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:48,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 6862 transitions. [2021-06-06 00:02:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:48,357 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:48,358 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:48,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2606 [2021-06-06 00:02:48,565 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -714132561, now seen corresponding path program 33 times [2021-06-06 00:02:48,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:48,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402348797] [2021-06-06 00:02:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:48,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:48,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402348797] [2021-06-06 00:02:48,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402348797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:48,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756452892] [2021-06-06 00:02:48,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:48,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:02:48,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:48,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:02:48,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:49,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:02:49,081 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:02:49,087 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:49,093 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:49,100 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:49,106 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:49,112 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:02:49,118 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:02:49,124 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:49,130 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:02:49,136 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:49,143 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:49,148 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:49,155 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:02:49,161 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:49,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:49,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:02:49,164 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:49,184 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-06 00:02:49,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:02:49,185 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:02:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:49,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756452892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:49,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:49,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:02:49,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967318674] [2021-06-06 00:02:49,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:02:49,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:49,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:02:49,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:02:49,208 INFO L87 Difference]: Start difference. First operand 2002 states and 6862 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:49,701 INFO L93 Difference]: Finished difference Result 2504 states and 8391 transitions. [2021-06-06 00:02:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:02:49,701 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:49,704 INFO L225 Difference]: With dead ends: 2504 [2021-06-06 00:02:49,704 INFO L226 Difference]: Without dead ends: 2483 [2021-06-06 00:02:49,705 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 615.7ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:02:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-06-06 00:02:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2009. [2021-06-06 00:02:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.431772908366534) internal successors, (6891), 2008 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6891 transitions. [2021-06-06 00:02:49,729 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6891 transitions. Word has length 26 [2021-06-06 00:02:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:49,729 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 6891 transitions. [2021-06-06 00:02:49,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6891 transitions. [2021-06-06 00:02:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:49,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:49,732 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:49,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2634 [2021-06-06 00:02:49,932 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:49,933 INFO L82 PathProgramCache]: Analyzing trace with hash -881941653, now seen corresponding path program 34 times [2021-06-06 00:02:49,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:49,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911663113] [2021-06-06 00:02:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:50,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:50,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911663113] [2021-06-06 00:02:50,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911663113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:50,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100311378] [2021-06-06 00:02:50,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:50,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:50,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:50,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:02:50,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:50,430 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:02:50,437 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:50,443 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:02:50,450 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:50,456 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:02:50,463 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:50,480 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:02:50,488 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:50,495 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:50,501 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:50,507 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:02:50,513 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:02:50,519 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:02:50,525 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:50,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:50,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:50,529 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:50,548 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:02:50,549 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:02:50,549 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:02:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:50,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100311378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:50,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:50,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:02:50,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756853215] [2021-06-06 00:02:50,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:50,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:50,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:50,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:50,577 INFO L87 Difference]: Start difference. First operand 2009 states and 6891 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:50,954 INFO L93 Difference]: Finished difference Result 2352 states and 7913 transitions. [2021-06-06 00:02:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:02:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:50,957 INFO L225 Difference]: With dead ends: 2352 [2021-06-06 00:02:50,957 INFO L226 Difference]: Without dead ends: 2333 [2021-06-06 00:02:50,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 474.5ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:02:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2021-06-06 00:02:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2003. [2021-06-06 00:02:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4315684315684316) internal successors, (6870), 2002 states have internal predecessors, (6870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6870 transitions. [2021-06-06 00:02:50,981 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6870 transitions. Word has length 26 [2021-06-06 00:02:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:50,981 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6870 transitions. [2021-06-06 00:02:50,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6870 transitions. [2021-06-06 00:02:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:50,984 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:50,984 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:51,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2676,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:51,197 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1345509615, now seen corresponding path program 35 times [2021-06-06 00:02:51,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:51,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676720216] [2021-06-06 00:02:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:51,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:51,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676720216] [2021-06-06 00:02:51,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676720216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:51,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447226045] [2021-06-06 00:02:51,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:51,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:02:51,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:51,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:02:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:51,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,710 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:51,711 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,719 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:51,720 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,727 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:51,728 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,739 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:51,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:02:51,740 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:51,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:51,752 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,761 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:51,762 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,771 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:51,772 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,784 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:51,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:51,786 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,795 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:51,796 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:51,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:51,815 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,824 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:02:51,825 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:51,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:02:51,838 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,849 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:51,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:51,851 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,860 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:02:51,861 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,872 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:51,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:02:51,873 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:51,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:02:51,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2021-06-06 00:02:51,880 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:51,977 INFO L628 ElimStorePlain]: treesize reduction 24, result has 82.5 percent of original size [2021-06-06 00:02:51,979 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:02:51,979 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:91 [2021-06-06 00:02:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:52,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447226045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:52,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:52,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:02:52,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014881434] [2021-06-06 00:02:52,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:02:52,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:52,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:02:52,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:02:52,065 INFO L87 Difference]: Start difference. First operand 2003 states and 6870 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:53,358 INFO L93 Difference]: Finished difference Result 2949 states and 9724 transitions. [2021-06-06 00:02:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:02:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:53,362 INFO L225 Difference]: With dead ends: 2949 [2021-06-06 00:02:53,362 INFO L226 Difference]: Without dead ends: 2899 [2021-06-06 00:02:53,363 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1260.7ms TimeCoverageRelationStatistics Valid=271, Invalid=1135, Unknown=0, NotChecked=0, Total=1406 [2021-06-06 00:02:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2021-06-06 00:02:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1994. [2021-06-06 00:02:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 3.4290015052684395) internal successors, (6834), 1993 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 6834 transitions. [2021-06-06 00:02:53,389 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 6834 transitions. Word has length 26 [2021-06-06 00:02:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:53,389 INFO L482 AbstractCegarLoop]: Abstraction has 1994 states and 6834 transitions. [2021-06-06 00:02:53,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 6834 transitions. [2021-06-06 00:02:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:53,392 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:53,392 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:53,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2720,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:53,592 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:53,592 INFO L82 PathProgramCache]: Analyzing trace with hash -583168205, now seen corresponding path program 36 times [2021-06-06 00:02:53,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:53,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384706261] [2021-06-06 00:02:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:53,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:53,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384706261] [2021-06-06 00:02:53,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384706261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:53,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956777279] [2021-06-06 00:02:53,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:53,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:02:53,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:53,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:02:53,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,082 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:54,084 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,095 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:54,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:02:54,096 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,222 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:02:54,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:02:54,238 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,249 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:54,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:54,250 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,352 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-06 00:02:54,353 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:02:54,366 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,376 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:54,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:54,377 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,486 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:54,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:02:54,487 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:54,496 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:54,499 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:54,578 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:54,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:02:54,583 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:293, output treesize:141 [2021-06-06 00:02:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:54,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956777279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:54,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:54,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:02:54,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841013962] [2021-06-06 00:02:54,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:02:54,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:54,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:02:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:02:54,702 INFO L87 Difference]: Start difference. First operand 1994 states and 6834 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:55,329 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-06-06 00:02:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:55,559 INFO L93 Difference]: Finished difference Result 2201 states and 7427 transitions. [2021-06-06 00:02:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:02:55,560 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:55,570 INFO L225 Difference]: With dead ends: 2201 [2021-06-06 00:02:55,570 INFO L226 Difference]: Without dead ends: 2176 [2021-06-06 00:02:55,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 906.3ms TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:02:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-06 00:02:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1990. [2021-06-06 00:02:55,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1989 states have (on average 3.431875314228255) internal successors, (6826), 1989 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 6826 transitions. [2021-06-06 00:02:55,592 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 6826 transitions. Word has length 26 [2021-06-06 00:02:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:55,592 INFO L482 AbstractCegarLoop]: Abstraction has 1990 states and 6826 transitions. [2021-06-06 00:02:55,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 6826 transitions. [2021-06-06 00:02:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:55,594 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:55,594 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:55,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2769,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:55,795 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash -129711505, now seen corresponding path program 37 times [2021-06-06 00:02:55,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:55,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532644075] [2021-06-06 00:02:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:55,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:55,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532644075] [2021-06-06 00:02:55,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532644075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:55,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782471261] [2021-06-06 00:02:55,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:56,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:02:56,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:56,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:56,422 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:56,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:56,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:56,434 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:56,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:02:56,438 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:56,753 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2021-06-06 00:02:56,753 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.7 percent of original size [2021-06-06 00:02:56,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:56,767 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:56,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:02:56,768 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:56,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:56,779 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:56,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:02:56,781 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:56,925 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:02:56,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:56,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:56,939 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:56,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:56,943 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:56,954 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:56,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:02:56,955 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:57,080 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:02:57,081 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:57,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:57,094 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:57,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:57,095 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:57,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:57,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:02:57,107 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:57,338 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-06-06 00:02:57,339 INFO L628 ElimStorePlain]: treesize reduction 4, result has 98.5 percent of original size [2021-06-06 00:02:57,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:57,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:57,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:02:57,355 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:57,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:57,364 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:02:57,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:02:57,366 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:57,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:57,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:02:57,470 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:170 [2021-06-06 00:02:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:57,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782471261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:57,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:57,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:02:57,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433171341] [2021-06-06 00:02:57,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:02:57,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:02:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:02:57,593 INFO L87 Difference]: Start difference. First operand 1990 states and 6826 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:58,273 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-06-06 00:02:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:58,447 INFO L93 Difference]: Finished difference Result 2694 states and 8981 transitions. [2021-06-06 00:02:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:02:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:02:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:58,451 INFO L225 Difference]: With dead ends: 2694 [2021-06-06 00:02:58,451 INFO L226 Difference]: Without dead ends: 2648 [2021-06-06 00:02:58,451 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1018.9ms TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:02:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-06-06 00:02:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 1999. [2021-06-06 00:02:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 3.4334334334334335) internal successors, (6860), 1998 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 6860 transitions. [2021-06-06 00:02:58,476 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 6860 transitions. Word has length 26 [2021-06-06 00:02:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:58,476 INFO L482 AbstractCegarLoop]: Abstraction has 1999 states and 6860 transitions. [2021-06-06 00:02:58,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 6860 transitions. [2021-06-06 00:02:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:02:58,479 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:58,479 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:02:58,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2800 [2021-06-06 00:02:58,679 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -858801881, now seen corresponding path program 38 times [2021-06-06 00:02:58,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:58,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760237566] [2021-06-06 00:02:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:58,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:58,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760237566] [2021-06-06 00:02:58,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760237566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:58,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782057524] [2021-06-06 00:02:58,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:58,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:58,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:58,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:02:58,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:59,273 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-06 00:02:59,535 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-06 00:02:59,607 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_290, v_prenex_289]} [2021-06-06 00:02:59,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:59,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:02:59,612 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:59,711 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-06 00:02:59,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:59,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:59,716 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:59,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:59,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:59,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:02:59,721 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:59,772 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-06-06 00:02:59,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:02:59,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:02:59,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:02:59,776 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:02:59,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:02:59,798 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:02:59,798 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-06 00:02:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:59,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782057524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:59,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:59,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:02:59,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858226877] [2021-06-06 00:02:59,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:02:59,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:02:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:02:59,836 INFO L87 Difference]: Start difference. First operand 1999 states and 6860 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:00,702 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:03:01,087 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-06-06 00:03:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:01,276 INFO L93 Difference]: Finished difference Result 2703 states and 8943 transitions. [2021-06-06 00:03:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:03:01,276 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:01,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:01,280 INFO L225 Difference]: With dead ends: 2703 [2021-06-06 00:03:01,280 INFO L226 Difference]: Without dead ends: 2658 [2021-06-06 00:03:01,280 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1652.0ms TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:03:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2021-06-06 00:03:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 1983. [2021-06-06 00:03:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-06 00:03:01,305 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-06 00:03:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:01,305 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-06 00:03:01,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-06 00:03:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:01,308 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:01,308 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:01,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2837,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:01,508 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:01,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1072305685, now seen corresponding path program 39 times [2021-06-06 00:03:01,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:01,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786292959] [2021-06-06 00:03:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:01,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:01,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786292959] [2021-06-06 00:03:01,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786292959] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:01,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023910431] [2021-06-06 00:03:01,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:01,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:03:01,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:01,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:03:01,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:01,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:01,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:01,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:03:01,991 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:01,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:01,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:01,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:01,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:01,998 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:02,004 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:02,010 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:02,017 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:03:02,024 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:02,030 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:02,036 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:02,042 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:02,048 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:02,054 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:03:02,071 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:02,076 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:02,082 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:02,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:02,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:02,085 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:02,103 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:03:02,104 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:03:02,104 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:03:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:02,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023910431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:02,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:02,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:03:02,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007316444] [2021-06-06 00:03:02,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:03:02,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:03:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:03:02,126 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:02,682 INFO L93 Difference]: Finished difference Result 2475 states and 8338 transitions. [2021-06-06 00:03:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:03:02,682 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:02,686 INFO L225 Difference]: With dead ends: 2475 [2021-06-06 00:03:02,686 INFO L226 Difference]: Without dead ends: 2460 [2021-06-06 00:03:02,686 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 541.0ms TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:03:02,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-06-06 00:03:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1983. [2021-06-06 00:03:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-06 00:03:02,709 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-06 00:03:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:02,709 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-06 00:03:02,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-06 00:03:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:02,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:02,711 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:02,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2848 [2021-06-06 00:03:02,912 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1240114777, now seen corresponding path program 40 times [2021-06-06 00:03:02,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:02,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715095887] [2021-06-06 00:03:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:03,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:03,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715095887] [2021-06-06 00:03:03,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715095887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:03,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633639256] [2021-06-06 00:03:03,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:03,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:03,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:03,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:03:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:03,420 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:03,426 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:03,432 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:03:03,437 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:03,443 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:03,448 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:03,454 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:03,459 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:03,470 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:03,476 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:03:03,482 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:03:03,487 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:03,492 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:03:03,497 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:03,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:03,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:03,500 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:03,519 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:03:03,520 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:03:03,520 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:03:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:03,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633639256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:03,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:03,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:03:03,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470323368] [2021-06-06 00:03:03,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:03:03,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:03:03,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:03:03,549 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:04,512 INFO L93 Difference]: Finished difference Result 2790 states and 9280 transitions. [2021-06-06 00:03:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:03:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:04,516 INFO L225 Difference]: With dead ends: 2790 [2021-06-06 00:03:04,517 INFO L226 Difference]: Without dead ends: 2760 [2021-06-06 00:03:04,517 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 990.0ms TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:03:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-06-06 00:03:04,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1983. [2021-06-06 00:03:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-06 00:03:04,551 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-06 00:03:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:04,552 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-06 00:03:04,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-06 00:03:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:04,554 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:04,554 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:04,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2890,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:04,755 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:04,755 INFO L82 PathProgramCache]: Analyzing trace with hash -941341329, now seen corresponding path program 41 times [2021-06-06 00:03:04,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:04,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094895634] [2021-06-06 00:03:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:04,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:04,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094895634] [2021-06-06 00:03:04,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094895634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:04,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469792157] [2021-06-06 00:03:04,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:04,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:03:04,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:04,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:03:04,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:05,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:05,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:05,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:05,181 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:05,263 INFO L628 ElimStorePlain]: treesize reduction 121, result has 44.0 percent of original size [2021-06-06 00:03:05,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:05,266 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:05,291 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:05,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:05,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:05,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:05,296 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:05,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:05,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:05,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:05,324 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:05,344 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:05,346 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:03:05,346 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:248, output treesize:22 [2021-06-06 00:03:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:05,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469792157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:05,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:05,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:03:05,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075324992] [2021-06-06 00:03:05,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:03:05,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:05,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:03:05,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:03:05,383 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:05,996 INFO L93 Difference]: Finished difference Result 2608 states and 8716 transitions. [2021-06-06 00:03:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:03:05,997 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:06,000 INFO L225 Difference]: With dead ends: 2608 [2021-06-06 00:03:06,000 INFO L226 Difference]: Without dead ends: 2578 [2021-06-06 00:03:06,000 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 662.8ms TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:03:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-06-06 00:03:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1986. [2021-06-06 00:03:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 3.433249370277078) internal successors, (6815), 1985 states have internal predecessors, (6815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 6815 transitions. [2021-06-06 00:03:06,025 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 6815 transitions. Word has length 26 [2021-06-06 00:03:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:06,025 INFO L482 AbstractCegarLoop]: Abstraction has 1986 states and 6815 transitions. [2021-06-06 00:03:06,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 6815 transitions. [2021-06-06 00:03:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:06,027 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:06,027 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:06,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2934,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:06,228 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1403214703, now seen corresponding path program 42 times [2021-06-06 00:03:06,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:06,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683521247] [2021-06-06 00:03:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:06,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:06,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683521247] [2021-06-06 00:03:06,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683521247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:06,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210569301] [2021-06-06 00:03:06,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:06,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:03:06,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:06,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:03:06,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:06,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:06,765 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:06,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:03:06,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:06,776 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:06,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:06,779 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:06,887 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:03:06,887 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:06,900 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:06,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:03:06,902 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:06,911 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:06,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:03:06,915 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:07,027 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-06 00:03:07,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:07,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:07,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:07,042 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:07,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:07,051 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:07,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:03:07,052 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:07,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:07,152 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:07,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:03:07,154 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:07,167 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:07,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:03:07,169 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:07,247 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:07,251 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:03:07,251 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:309, output treesize:141 [2021-06-06 00:03:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:07,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210569301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:07,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:07,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:03:07,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665005994] [2021-06-06 00:03:07,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:03:07,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:03:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:03:07,373 INFO L87 Difference]: Start difference. First operand 1986 states and 6815 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:07,855 INFO L93 Difference]: Finished difference Result 2559 states and 8622 transitions. [2021-06-06 00:03:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:03:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:07,859 INFO L225 Difference]: With dead ends: 2559 [2021-06-06 00:03:07,859 INFO L226 Difference]: Without dead ends: 2544 [2021-06-06 00:03:07,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 681.8ms TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:03:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-06-06 00:03:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2010. [2021-06-06 00:03:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 3.4310602289696366) internal successors, (6893), 2009 states have internal predecessors, (6893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6893 transitions. [2021-06-06 00:03:07,884 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6893 transitions. Word has length 26 [2021-06-06 00:03:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:07,884 INFO L482 AbstractCegarLoop]: Abstraction has 2010 states and 6893 transitions. [2021-06-06 00:03:07,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6893 transitions. [2021-06-06 00:03:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:07,886 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:07,886 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:08,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2948 [2021-06-06 00:03:08,087 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:08,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2092411309, now seen corresponding path program 43 times [2021-06-06 00:03:08,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:08,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558788833] [2021-06-06 00:03:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:08,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:08,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558788833] [2021-06-06 00:03:08,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558788833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:08,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083057196] [2021-06-06 00:03:08,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:08,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:03:08,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:08,695 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:03:08,899 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-06 00:03:08,954 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_313, v_prenex_314], 2=[A, v_prenex_312]} [2021-06-06 00:03:08,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:08,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:08,959 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:09,086 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-06 00:03:09,086 INFO L628 ElimStorePlain]: treesize reduction 117, result has 43.8 percent of original size [2021-06-06 00:03:09,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:09,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-06 00:03:09,091 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:09,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:09,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:09,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:09,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:09,122 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:09,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:09,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:09,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:09,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:09,149 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:09,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:09,170 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:03:09,171 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:222, output treesize:15 [2021-06-06 00:03:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:09,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083057196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:09,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:09,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:03:09,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106162595] [2021-06-06 00:03:09,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:03:09,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:09,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:03:09,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:03:09,198 INFO L87 Difference]: Start difference. First operand 2010 states and 6893 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:09,855 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:03:10,048 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-06-06 00:03:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:10,195 INFO L93 Difference]: Finished difference Result 2656 states and 8840 transitions. [2021-06-06 00:03:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:03:10,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:10,199 INFO L225 Difference]: With dead ends: 2656 [2021-06-06 00:03:10,199 INFO L226 Difference]: Without dead ends: 2611 [2021-06-06 00:03:10,199 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1323.7ms TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:03:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-06-06 00:03:10,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2044. [2021-06-06 00:03:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 3.4322075379344104) internal successors, (7012), 2043 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 7012 transitions. [2021-06-06 00:03:10,224 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 7012 transitions. Word has length 26 [2021-06-06 00:03:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:10,224 INFO L482 AbstractCegarLoop]: Abstraction has 2044 states and 7012 transitions. [2021-06-06 00:03:10,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 7012 transitions. [2021-06-06 00:03:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:10,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:10,226 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:10,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2980 [2021-06-06 00:03:10,427 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash 585023207, now seen corresponding path program 44 times [2021-06-06 00:03:10,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:10,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741267680] [2021-06-06 00:03:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:10,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:10,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741267680] [2021-06-06 00:03:10,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741267680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:10,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410466472] [2021-06-06 00:03:10,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:10,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:10,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:10,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:03:10,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:11,015 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:03:11,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:11,145 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:11,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:03:11,150 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:11,540 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 150 [2021-06-06 00:03:11,541 INFO L628 ElimStorePlain]: treesize reduction 139, result has 74.8 percent of original size [2021-06-06 00:03:11,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:11,565 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:11,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:03:11,568 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:11,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:11,582 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:03:11,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:11,583 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:11,881 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2021-06-06 00:03:11,881 INFO L628 ElimStorePlain]: treesize reduction 32, result has 91.6 percent of original size [2021-06-06 00:03:11,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:11,903 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:11,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:03:11,905 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,047 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-06 00:03:12,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:12,072 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:03:12,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:03:12,074 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,221 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-06 00:03:12,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:12,248 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:03:12,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:03:12,249 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:12,263 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:03:12,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:03:12,264 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,373 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-06 00:03:12,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:12,395 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:03:12,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:03:12,399 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,503 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-06 00:03:12,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:12,524 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:12,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:03:12,525 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,625 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:12,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:03:12,648 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:12,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:12,757 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:03:12,757 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 24 variables, input treesize:563, output treesize:232 [2021-06-06 00:03:12,924 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2021-06-06 00:03:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:12,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410466472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:12,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:12,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:03:12,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625253579] [2021-06-06 00:03:12,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:03:12,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:12,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:03:12,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:03:12,956 INFO L87 Difference]: Start difference. First operand 2044 states and 7012 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:13,218 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-06 00:03:13,622 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-06-06 00:03:13,884 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:03:14,053 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-06 00:03:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:14,288 INFO L93 Difference]: Finished difference Result 2980 states and 9896 transitions. [2021-06-06 00:03:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:03:14,288 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:14,292 INFO L225 Difference]: With dead ends: 2980 [2021-06-06 00:03:14,293 INFO L226 Difference]: Without dead ends: 2950 [2021-06-06 00:03:14,293 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1642.5ms TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:03:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-06-06 00:03:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2027. [2021-06-06 00:03:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.428923988153998) internal successors, (6947), 2026 states have internal predecessors, (6947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6947 transitions. [2021-06-06 00:03:14,322 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6947 transitions. Word has length 26 [2021-06-06 00:03:14,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:14,322 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6947 transitions. [2021-06-06 00:03:14,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6947 transitions. [2021-06-06 00:03:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:14,324 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:14,324 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:14,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2994,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:14,525 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1104919697, now seen corresponding path program 45 times [2021-06-06 00:03:14,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:14,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037518294] [2021-06-06 00:03:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:14,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:14,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037518294] [2021-06-06 00:03:14,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037518294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:14,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874181919] [2021-06-06 00:03:14,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:14,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:03:14,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:14,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:03:14,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:15,117 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-06 00:03:15,225 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_343, v_prenex_344, v_prenex_345], 3=[v_prenex_347]} [2021-06-06 00:03:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:03:15,241 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,253 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:03:15,255 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,571 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2021-06-06 00:03:15,572 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.6 percent of original size [2021-06-06 00:03:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,587 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:03:15,591 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,603 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:15,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:03:15,604 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,745 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:03:15,746 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,760 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:15,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:03:15,762 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:03:15,774 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,902 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:03:15,902 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:15,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:15,919 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:15,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:15,929 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:15,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:03:15,930 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:16,041 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-06 00:03:16,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:16,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:16,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:16,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:16,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-06 00:03:16,057 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:16,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:16,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:16,066 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:03:16,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-06 00:03:16,068 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:16,178 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:03:16,178 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:16,183 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:03:16,183 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:425, output treesize:180 [2021-06-06 00:03:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:16,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874181919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:16,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:16,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:03:16,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045061612] [2021-06-06 00:03:16,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:03:16,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:16,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:03:16,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:03:16,316 INFO L87 Difference]: Start difference. First operand 2027 states and 6947 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:16,940 INFO L93 Difference]: Finished difference Result 2615 states and 8782 transitions. [2021-06-06 00:03:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:03:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:16,944 INFO L225 Difference]: With dead ends: 2615 [2021-06-06 00:03:16,944 INFO L226 Difference]: Without dead ends: 2590 [2021-06-06 00:03:16,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 945.1ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-06-06 00:03:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-06 00:03:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2027. [2021-06-06 00:03:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.430898321816387) internal successors, (6951), 2026 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6951 transitions. [2021-06-06 00:03:16,969 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6951 transitions. Word has length 26 [2021-06-06 00:03:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:16,969 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6951 transitions. [2021-06-06 00:03:16,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6951 transitions. [2021-06-06 00:03:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:16,971 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:16,972 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:17,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3037 [2021-06-06 00:03:17,172 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1379621035, now seen corresponding path program 46 times [2021-06-06 00:03:17,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:17,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815247310] [2021-06-06 00:03:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:17,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:17,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815247310] [2021-06-06 00:03:17,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815247310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:17,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640194451] [2021-06-06 00:03:17,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:17,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:17,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:17,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:03:17,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:18,002 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:18,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:03:18,003 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:18,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:18,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:03:18,027 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:18,400 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-06-06 00:03:18,400 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.4 percent of original size [2021-06-06 00:03:18,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:18,428 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:18,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:03:18,433 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:18,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:18,452 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:18,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:18,453 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:18,770 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-06-06 00:03:18,770 INFO L628 ElimStorePlain]: treesize reduction 14, result has 96.3 percent of original size [2021-06-06 00:03:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:18,789 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:18,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:03:18,792 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:18,810 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:18,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:18,812 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:19,110 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-06-06 00:03:19,110 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.4 percent of original size [2021-06-06 00:03:19,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:19,133 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:03:19,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:03:19,136 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:19,155 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:03:19,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:03:19,157 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:19,293 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:03:19,293 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:19,312 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:19,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:03:19,314 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:19,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:19,327 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:19,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:03:19,331 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:19,457 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-06 00:03:19,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:19,473 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:03:19,473 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 11 variables, input treesize:457, output treesize:247 [2021-06-06 00:03:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:19,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640194451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:19,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:19,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:03:19,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344038607] [2021-06-06 00:03:19,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:03:19,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:19,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:03:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:03:19,635 INFO L87 Difference]: Start difference. First operand 2027 states and 6951 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:20,299 INFO L93 Difference]: Finished difference Result 2605 states and 8786 transitions. [2021-06-06 00:03:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:03:20,299 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:20,303 INFO L225 Difference]: With dead ends: 2605 [2021-06-06 00:03:20,303 INFO L226 Difference]: Without dead ends: 2590 [2021-06-06 00:03:20,303 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 948.0ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:03:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-06 00:03:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2027. [2021-06-06 00:03:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.430898321816387) internal successors, (6951), 2026 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6951 transitions. [2021-06-06 00:03:20,328 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6951 transitions. Word has length 26 [2021-06-06 00:03:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:20,329 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6951 transitions. [2021-06-06 00:03:20,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6951 transitions. [2021-06-06 00:03:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:20,331 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:20,331 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:20,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3074 [2021-06-06 00:03:20,533 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1044929515, now seen corresponding path program 55 times [2021-06-06 00:03:20,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:20,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866540569] [2021-06-06 00:03:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:20,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:20,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866540569] [2021-06-06 00:03:20,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866540569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:20,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663756801] [2021-06-06 00:03:20,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:20,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:03:20,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:21,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:21,127 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:03:21,135 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:03:21,144 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:03:21,153 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:03:21,162 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:03:21,171 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:03:21,180 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:03:21,188 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:03:21,196 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:21,203 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:03:21,210 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:03:21,217 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:03:21,224 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:03:21,231 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:21,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:21,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:03:21,234 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:21,253 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:03:21,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:03:21,254 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:03:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:21,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663756801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:21,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:21,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-06 00:03:21,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438328053] [2021-06-06 00:03:21,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:03:21,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:03:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:03:21,276 INFO L87 Difference]: Start difference. First operand 2027 states and 6951 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:21,821 INFO L93 Difference]: Finished difference Result 2632 states and 8515 transitions. [2021-06-06 00:03:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:03:21,822 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:21,825 INFO L225 Difference]: With dead ends: 2632 [2021-06-06 00:03:21,825 INFO L226 Difference]: Without dead ends: 2595 [2021-06-06 00:03:21,825 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 585.3ms TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:03:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2021-06-06 00:03:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2051. [2021-06-06 00:03:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 3.430731707317073) internal successors, (7033), 2050 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 7033 transitions. [2021-06-06 00:03:21,860 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 7033 transitions. Word has length 26 [2021-06-06 00:03:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:21,860 INFO L482 AbstractCegarLoop]: Abstraction has 2051 states and 7033 transitions. [2021-06-06 00:03:21,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 7033 transitions. [2021-06-06 00:03:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:21,862 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:21,862 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:22,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3149 [2021-06-06 00:03:22,063 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:22,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2112804079, now seen corresponding path program 56 times [2021-06-06 00:03:22,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:22,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601008428] [2021-06-06 00:03:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:22,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:22,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601008428] [2021-06-06 00:03:22,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601008428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:22,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624280788] [2021-06-06 00:03:22,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:22,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:22,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:03:22,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:22,495 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_357], 5=[v_prenex_361, v_prenex_359]} [2021-06-06 00:03:22,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:22,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:22,502 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:22,585 INFO L628 ElimStorePlain]: treesize reduction 133, result has 44.1 percent of original size [2021-06-06 00:03:22,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:22,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:22,590 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:22,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:22,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:22,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:03:22,620 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:22,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:22,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:22,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:22,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:03:22,648 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:22,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:22,669 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:03:22,669 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:22 [2021-06-06 00:03:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:22,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624280788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:22,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:22,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-06 00:03:22,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749589656] [2021-06-06 00:03:22,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:03:22,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:22,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:03:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:03:22,704 INFO L87 Difference]: Start difference. First operand 2051 states and 7033 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:23,566 INFO L93 Difference]: Finished difference Result 2527 states and 8437 transitions. [2021-06-06 00:03:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:03:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:23,570 INFO L225 Difference]: With dead ends: 2527 [2021-06-06 00:03:23,570 INFO L226 Difference]: Without dead ends: 2481 [2021-06-06 00:03:23,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 810.3ms TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:03:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-06-06 00:03:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2047. [2021-06-06 00:03:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 3.424731182795699) internal successors, (7007), 2046 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 7007 transitions. [2021-06-06 00:03:23,594 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 7007 transitions. Word has length 26 [2021-06-06 00:03:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:23,594 INFO L482 AbstractCegarLoop]: Abstraction has 2047 states and 7007 transitions. [2021-06-06 00:03:23,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 7007 transitions. [2021-06-06 00:03:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:23,597 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:23,597 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:23,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3239,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:23,813 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:23,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:23,813 INFO L82 PathProgramCache]: Analyzing trace with hash 455537647, now seen corresponding path program 57 times [2021-06-06 00:03:23,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:23,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968933919] [2021-06-06 00:03:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:24,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:24,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968933919] [2021-06-06 00:03:24,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968933919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:24,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749075361] [2021-06-06 00:03:24,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:24,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:03:24,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:24,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:03:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:24,424 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:03:24,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:24,712 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-06 00:03:24,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:03:24,716 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:24,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:24,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:24,743 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:03:24,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:03:24,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:25,093 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-06 00:03:25,093 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:25,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:25,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:03:25,132 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:25,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,158 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:03:25,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:03:25,160 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:25,496 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-06 00:03:25,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,534 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:03:25,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-06 00:03:25,548 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:25,572 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:03:25,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-06 00:03:25,573 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:26,146 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2021-06-06 00:03:26,146 INFO L628 ElimStorePlain]: treesize reduction 3, result has 99.5 percent of original size [2021-06-06 00:03:26,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,181 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:03:26,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-06 00:03:26,182 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,205 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:03:26,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:03:26,207 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:26,494 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-06 00:03:26,494 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:26,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,531 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:03:26,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2021-06-06 00:03:26,533 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:26,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:26,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:03:26,563 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:27,058 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2021-06-06 00:03:27,059 INFO L628 ElimStorePlain]: treesize reduction 28, result has 94.5 percent of original size [2021-06-06 00:03:27,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,087 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:03:27,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:03:27,088 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,111 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:03:27,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:03:27,115 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:27,538 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2021-06-06 00:03:27,538 INFO L628 ElimStorePlain]: treesize reduction 26, result has 94.1 percent of original size [2021-06-06 00:03:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,568 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:03:27,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-06 00:03:27,570 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:27,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,590 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:03:27,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-06 00:03:27,592 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:27,790 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:03:27,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:27,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,818 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:03:27,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:03:27,820 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:27,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:27,843 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:03:27,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:03:27,847 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:28,163 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-06-06 00:03:28,164 INFO L628 ElimStorePlain]: treesize reduction 24, result has 92.8 percent of original size [2021-06-06 00:03:28,175 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-06 00:03:28,175 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:721, output treesize:301 [2021-06-06 00:03:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:28,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749075361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:28,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:28,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:03:28,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191328928] [2021-06-06 00:03:28,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:03:28,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:28,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:03:28,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:03:28,312 INFO L87 Difference]: Start difference. First operand 2047 states and 7007 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:29,453 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:03:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:29,659 INFO L93 Difference]: Finished difference Result 2628 states and 8841 transitions. [2021-06-06 00:03:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:03:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:29,663 INFO L225 Difference]: With dead ends: 2628 [2021-06-06 00:03:29,663 INFO L226 Difference]: Without dead ends: 2613 [2021-06-06 00:03:29,663 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1278.5ms TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:03:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2021-06-06 00:03:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2062. [2021-06-06 00:03:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 3.430373605046094) internal successors, (7070), 2061 states have internal predecessors, (7070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7070 transitions. [2021-06-06 00:03:29,688 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7070 transitions. Word has length 26 [2021-06-06 00:03:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:29,689 INFO L482 AbstractCegarLoop]: Abstraction has 2062 states and 7070 transitions. [2021-06-06 00:03:29,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7070 transitions. [2021-06-06 00:03:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:29,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:29,691 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:29,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3253 [2021-06-06 00:03:29,892 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1197737873, now seen corresponding path program 47 times [2021-06-06 00:03:29,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:29,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595583135] [2021-06-06 00:03:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:30,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:30,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595583135] [2021-06-06 00:03:30,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595583135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:30,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801944677] [2021-06-06 00:03:30,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:30,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:03:30,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:30,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:03:30,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:30,537 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:03:30,721 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:03:30,992 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2021-06-06 00:03:31,026 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_390, v_prenex_391]} [2021-06-06 00:03:31,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:31,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:03:31,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:31,146 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-06-06 00:03:31,147 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-06 00:03:31,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:31,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:31,151 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:31,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:31,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:31,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:31,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:31,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:31,195 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:31,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:31,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:03:31,199 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:31,241 INFO L628 ElimStorePlain]: treesize reduction 13, result has 79.4 percent of original size [2021-06-06 00:03:31,243 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:03:31,243 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-06 00:03:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:31,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801944677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:31,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:31,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:03:31,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427472231] [2021-06-06 00:03:31,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:03:31,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:03:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:03:31,283 INFO L87 Difference]: Start difference. First operand 2062 states and 7070 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:31,905 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-06 00:03:32,376 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 119 [2021-06-06 00:03:32,898 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2021-06-06 00:03:33,410 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 86 [2021-06-06 00:03:33,845 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 125 [2021-06-06 00:03:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:34,117 INFO L93 Difference]: Finished difference Result 2678 states and 8891 transitions. [2021-06-06 00:03:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:03:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:34,121 INFO L225 Difference]: With dead ends: 2678 [2021-06-06 00:03:34,121 INFO L226 Difference]: Without dead ends: 2648 [2021-06-06 00:03:34,122 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 3059.3ms TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:03:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-06-06 00:03:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2073. [2021-06-06 00:03:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 3.4305019305019306) internal successors, (7108), 2072 states have internal predecessors, (7108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 7108 transitions. [2021-06-06 00:03:34,147 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 7108 transitions. Word has length 26 [2021-06-06 00:03:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:34,147 INFO L482 AbstractCegarLoop]: Abstraction has 2073 states and 7108 transitions. [2021-06-06 00:03:34,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 7108 transitions. [2021-06-06 00:03:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:34,149 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:34,149 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:34,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3318 [2021-06-06 00:03:34,350 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:34,350 INFO L82 PathProgramCache]: Analyzing trace with hash 352643691, now seen corresponding path program 58 times [2021-06-06 00:03:34,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:34,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287734944] [2021-06-06 00:03:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:34,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:34,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287734944] [2021-06-06 00:03:34,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287734944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:34,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801788634] [2021-06-06 00:03:34,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:34,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:34,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:34,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:03:34,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:34,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:34,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:34,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:34,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:34,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:34,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:03:34,992 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:34,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:34,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:34,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:34,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:03:35,001 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:03:35,009 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:03:35,018 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:35,026 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:03:35,034 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:03:35,042 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:03:35,049 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:03:35,056 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:03:35,064 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:03:35,071 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:03:35,078 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:35,085 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:03:35,091 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:35,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:35,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:03:35,095 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:35,114 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-06 00:03:35,115 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:03:35,116 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:03:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:35,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801788634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:35,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:35,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 00:03:35,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026856464] [2021-06-06 00:03:35,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:03:35,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:35,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:03:35,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:03:35,137 INFO L87 Difference]: Start difference. First operand 2073 states and 7108 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:36,089 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-06-06 00:03:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:36,379 INFO L93 Difference]: Finished difference Result 3338 states and 10716 transitions. [2021-06-06 00:03:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:03:36,379 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:36,384 INFO L225 Difference]: With dead ends: 3338 [2021-06-06 00:03:36,384 INFO L226 Difference]: Without dead ends: 3295 [2021-06-06 00:03:36,384 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1055.6ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:03:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-06-06 00:03:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2202. [2021-06-06 00:03:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.452975920036347) internal successors, (7600), 2201 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 7600 transitions. [2021-06-06 00:03:36,415 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 7600 transitions. Word has length 26 [2021-06-06 00:03:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:36,415 INFO L482 AbstractCegarLoop]: Abstraction has 2202 states and 7600 transitions. [2021-06-06 00:03:36,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 7600 transitions. [2021-06-06 00:03:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:36,417 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:36,417 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:36,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3333,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:36,618 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash 392132503, now seen corresponding path program 48 times [2021-06-06 00:03:36,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:36,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489888301] [2021-06-06 00:03:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:36,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:36,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489888301] [2021-06-06 00:03:36,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489888301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:36,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730765630] [2021-06-06 00:03:36,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:36,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:03:36,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:36,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:03:36,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:37,366 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-06 00:03:37,717 INFO L446 ElimStorePlain]: Different costs {28=[v_prenex_418], 45=[A]} [2021-06-06 00:03:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:37,747 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:03:37,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 33 [2021-06-06 00:03:37,749 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:37,785 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:37,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-06 00:03:37,789 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:37,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:37,832 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:37,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 37 [2021-06-06 00:03:37,836 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:37,854 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:03:37,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:03:37,855 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:37,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:37,873 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:03:37,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:03:37,874 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:37,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:37,898 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:03:37,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 30 [2021-06-06 00:03:37,900 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,249 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 115 [2021-06-06 00:03:38,249 INFO L628 ElimStorePlain]: treesize reduction 162, result has 71.7 percent of original size [2021-06-06 00:03:38,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:38,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:38,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 36 [2021-06-06 00:03:38,272 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:38,295 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:03:38,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2021-06-06 00:03:38,296 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:38,320 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:38,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2021-06-06 00:03:38,336 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:38,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:38,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 36 [2021-06-06 00:03:38,363 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:38,389 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:38,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-06-06 00:03:38,391 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:38,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:38,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2021-06-06 00:03:38,411 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:38,553 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-06 00:03:38,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:38,569 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:03:38,570 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:801, output treesize:513 [2021-06-06 00:03:38,740 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-06-06 00:03:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:38,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730765630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:38,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:38,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:03:38,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351706764] [2021-06-06 00:03:38,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:03:38,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:38,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:03:38,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:03:38,840 INFO L87 Difference]: Start difference. First operand 2202 states and 7600 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:39,519 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-06 00:03:39,900 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-06-06 00:03:40,360 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2021-06-06 00:03:40,628 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2021-06-06 00:03:41,047 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-06-06 00:03:41,650 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-06 00:03:42,375 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-06 00:03:42,582 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-06 00:03:42,874 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2021-06-06 00:03:43,174 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-06 00:03:43,339 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-06 00:03:43,807 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-06-06 00:03:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:44,088 INFO L93 Difference]: Finished difference Result 3312 states and 10745 transitions. [2021-06-06 00:03:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:03:44,089 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:44,093 INFO L225 Difference]: With dead ends: 3312 [2021-06-06 00:03:44,093 INFO L226 Difference]: Without dead ends: 3267 [2021-06-06 00:03:44,093 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5180.1ms TimeCoverageRelationStatistics Valid=404, Invalid=2046, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:03:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-06-06 00:03:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2225. [2021-06-06 00:03:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2224 states have (on average 3.459982014388489) internal successors, (7695), 2224 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 7695 transitions. [2021-06-06 00:03:44,122 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 7695 transitions. Word has length 26 [2021-06-06 00:03:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:44,122 INFO L482 AbstractCegarLoop]: Abstraction has 2225 states and 7695 transitions. [2021-06-06 00:03:44,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 7695 transitions. [2021-06-06 00:03:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:44,124 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:44,124 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:44,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3423,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:44,325 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash -658448197, now seen corresponding path program 49 times [2021-06-06 00:03:44,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:44,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579607956] [2021-06-06 00:03:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:44,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:44,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579607956] [2021-06-06 00:03:44,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579607956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:44,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725891770] [2021-06-06 00:03:44,546 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:03:44,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:44,828 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-06 00:03:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:44,916 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:03:44,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:03:44,918 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:44,946 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:44,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:03:44,947 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,252 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2021-06-06 00:03:45,252 INFO L628 ElimStorePlain]: treesize reduction 71, result has 83.9 percent of original size [2021-06-06 00:03:45,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:45,270 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,281 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:03:45,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:03:45,282 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,401 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:03:45,402 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:03:45,416 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,532 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-06 00:03:45,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,544 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:03:45,547 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,670 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:03:45,671 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:03:45,686 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,789 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-06 00:03:45,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,804 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:45,807 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:45,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:03:45,820 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:45,983 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-06 00:03:45,983 INFO L628 ElimStorePlain]: treesize reduction 18, result has 92.1 percent of original size [2021-06-06 00:03:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:45,993 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:45,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:03:45,995 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:46,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:46,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:46,080 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:03:46,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:03:46,081 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:46,153 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:46,158 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:03:46,158 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-06 00:03:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:46,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725891770] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:46,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:46,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:03:46,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876922693] [2021-06-06 00:03:46,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:03:46,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:46,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:03:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:03:46,273 INFO L87 Difference]: Start difference. First operand 2225 states and 7695 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:47,162 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-06 00:03:47,278 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-06 00:03:47,451 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-06 00:03:47,590 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-06-06 00:03:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:47,967 INFO L93 Difference]: Finished difference Result 3319 states and 10983 transitions. [2021-06-06 00:03:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:03:47,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:47,972 INFO L225 Difference]: With dead ends: 3319 [2021-06-06 00:03:47,972 INFO L226 Difference]: Without dead ends: 3289 [2021-06-06 00:03:47,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1688.0ms TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:03:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-06-06 00:03:47,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2211. [2021-06-06 00:03:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2210 states have (on average 3.4547511312217196) internal successors, (7635), 2210 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 7635 transitions. [2021-06-06 00:03:48,004 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 7635 transitions. Word has length 26 [2021-06-06 00:03:48,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:48,004 INFO L482 AbstractCegarLoop]: Abstraction has 2211 states and 7635 transitions. [2021-06-06 00:03:48,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 7635 transitions. [2021-06-06 00:03:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:48,007 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:48,007 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:48,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3454,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:48,207 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:48,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:48,207 INFO L82 PathProgramCache]: Analyzing trace with hash 578637215, now seen corresponding path program 59 times [2021-06-06 00:03:48,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:48,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311210101] [2021-06-06 00:03:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:48,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:48,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311210101] [2021-06-06 00:03:48,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311210101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:48,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036482103] [2021-06-06 00:03:48,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:48,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:03:48,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:48,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:03:48,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:48,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:03:48,830 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:03:48,838 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:48,846 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:03:48,853 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:03:48,861 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:03:48,875 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:03:48,885 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:03:48,895 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:03:48,904 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:03:48,914 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:03:48,923 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:03:48,932 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:48,941 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:03:48,949 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:48,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:48,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:03:48,954 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:48,973 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:03:48,974 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:03:48,974 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:03:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:49,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036482103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:49,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:49,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:03:49,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837082894] [2021-06-06 00:03:49,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:03:49,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:49,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:03:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:03:49,000 INFO L87 Difference]: Start difference. First operand 2211 states and 7635 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:49,958 INFO L93 Difference]: Finished difference Result 3809 states and 12432 transitions. [2021-06-06 00:03:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:03:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:49,964 INFO L225 Difference]: With dead ends: 3809 [2021-06-06 00:03:49,964 INFO L226 Difference]: Without dead ends: 3779 [2021-06-06 00:03:49,964 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 891.3ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:03:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2021-06-06 00:03:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 2344. [2021-06-06 00:03:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 3.458386683738796) internal successors, (8103), 2343 states have internal predecessors, (8103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 8103 transitions. [2021-06-06 00:03:49,999 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 8103 transitions. Word has length 26 [2021-06-06 00:03:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:49,999 INFO L482 AbstractCegarLoop]: Abstraction has 2344 states and 8103 transitions. [2021-06-06 00:03:49,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 8103 transitions. [2021-06-06 00:03:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:50,002 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:50,002 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:50,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3482,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:50,202 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1882681429, now seen corresponding path program 60 times [2021-06-06 00:03:50,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:50,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396200483] [2021-06-06 00:03:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:50,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:50,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396200483] [2021-06-06 00:03:50,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396200483] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:50,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806421284] [2021-06-06 00:03:50,329 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:50,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:03:50,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:50,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:03:50,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,573 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-06 00:03:50,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-06 00:03:50,578 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,600 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-06 00:03:50,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-06 00:03:50,602 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,629 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-06 00:03:50,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-06-06 00:03:50,633 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,648 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:03:50,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:03:50,649 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,674 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-06 00:03:50,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-06 00:03:50,678 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,703 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-06 00:03:50,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 29 [2021-06-06 00:03:50,705 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,729 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-06 00:03:50,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-06 00:03:50,731 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,747 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:03:50,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:03:50,748 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,764 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:03:50,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:03:50,764 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,790 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-06 00:03:50,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 26 [2021-06-06 00:03:50,791 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,818 INFO L354 Elim1Store]: treesize reduction 19, result has 38.7 percent of original size [2021-06-06 00:03:50,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 30 [2021-06-06 00:03:50,819 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,835 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:03:50,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:03:50,836 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,852 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:03:50,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:03:50,853 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,876 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:50,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2021-06-06 00:03:50,883 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,906 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-06 00:03:50,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-06 00:03:50,907 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:50,917 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:03:50,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:03:50,917 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:50,997 INFO L628 ElimStorePlain]: treesize reduction 104, result has 42.9 percent of original size [2021-06-06 00:03:50,998 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:03:50,998 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:78 [2021-06-06 00:03:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:51,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806421284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:51,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:51,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 00:03:51,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232174267] [2021-06-06 00:03:51,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:03:51,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:03:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:03:51,080 INFO L87 Difference]: Start difference. First operand 2344 states and 8103 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:52,314 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-06 00:03:52,486 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-06 00:03:52,905 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-06 00:03:53,117 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-06 00:03:53,660 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-06 00:03:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:53,798 INFO L93 Difference]: Finished difference Result 4305 states and 13885 transitions. [2021-06-06 00:03:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:03:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:03:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:53,804 INFO L225 Difference]: With dead ends: 4305 [2021-06-06 00:03:53,804 INFO L226 Difference]: Without dead ends: 4252 [2021-06-06 00:03:53,804 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2457.7ms TimeCoverageRelationStatistics Valid=556, Invalid=2096, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:03:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2021-06-06 00:03:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2347. [2021-06-06 00:03:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 3.4578005115089514) internal successors, (8112), 2346 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 8112 transitions. [2021-06-06 00:03:53,841 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 8112 transitions. Word has length 26 [2021-06-06 00:03:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:53,841 INFO L482 AbstractCegarLoop]: Abstraction has 2347 states and 8112 transitions. [2021-06-06 00:03:53,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 8112 transitions. [2021-06-06 00:03:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:03:53,844 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:53,844 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:03:54,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3572 [2021-06-06 00:03:54,045 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash 534773347, now seen corresponding path program 50 times [2021-06-06 00:03:54,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:54,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143495068] [2021-06-06 00:03:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:54,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:54,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143495068] [2021-06-06 00:03:54,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143495068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:54,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411532258] [2021-06-06 00:03:54,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:54,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:54,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:54,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:03:54,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:54,624 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:03:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:54,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:54,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:54,932 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:03:54,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26 [2021-06-06 00:03:54,934 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:54,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:54,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:54,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:54,950 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:03:54,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:03:54,950 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:55,388 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 124 [2021-06-06 00:03:55,389 INFO L628 ElimStorePlain]: treesize reduction 296, result has 58.8 percent of original size [2021-06-06 00:03:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,412 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:03:55,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:03:55,413 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:55,585 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:03:55,585 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:55,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:55,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:55,617 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:55,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-06 00:03:55,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:55,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:55,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-06 00:03:55,644 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:55,954 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2021-06-06 00:03:55,955 INFO L628 ElimStorePlain]: treesize reduction 27, result has 93.0 percent of original size [2021-06-06 00:03:55,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:55,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:55,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:55,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-06 00:03:55,983 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:55,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:55,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:55,998 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:03:55,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:03:55,999 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:56,121 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-06 00:03:56,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:56,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:56,144 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:03:56,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:03:56,145 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:56,270 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:03:56,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:56,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:56,291 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:56,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 27 [2021-06-06 00:03:56,294 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:56,414 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:03:56,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:56,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:56,428 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:56,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-06-06 00:03:56,433 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:56,547 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-06 00:03:56,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:56,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:56,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:03:56,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:03:56,569 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:03:56,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-06 00:03:56,573 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:03:56,680 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:03:56,680 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:03:56,686 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:03:56,686 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:785, output treesize:295 [2021-06-06 00:03:56,905 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-06-06 00:03:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:57,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411532258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:57,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:57,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:03:57,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084759408] [2021-06-06 00:03:57,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:03:57,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:57,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:03:57,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:03:57,030 INFO L87 Difference]: Start difference. First operand 2347 states and 8112 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:57,673 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-06 00:03:57,939 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-06 00:03:58,224 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-06 00:03:58,492 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-06 00:03:58,624 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-06-06 00:03:58,937 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-06 00:03:59,289 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-06-06 00:03:59,493 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-06 00:04:00,019 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-06-06 00:04:00,263 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-06 00:04:00,445 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-06 00:04:00,870 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-06 00:04:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:01,329 INFO L93 Difference]: Finished difference Result 3241 states and 10733 transitions. [2021-06-06 00:04:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-06 00:04:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:01,333 INFO L225 Difference]: With dead ends: 3241 [2021-06-06 00:04:01,333 INFO L226 Difference]: Without dead ends: 3211 [2021-06-06 00:04:01,334 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 4155.1ms TimeCoverageRelationStatistics Valid=353, Invalid=2197, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:04:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-06-06 00:04:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2360. [2021-06-06 00:04:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 3.454429843153879) internal successors, (8149), 2359 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 8149 transitions. [2021-06-06 00:04:01,365 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 8149 transitions. Word has length 26 [2021-06-06 00:04:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:01,365 INFO L482 AbstractCegarLoop]: Abstraction has 2360 states and 8149 transitions. [2021-06-06 00:04:01,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 8149 transitions. [2021-06-06 00:04:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:01,368 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:01,368 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:01,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3602,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:01,569 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash -849869469, now seen corresponding path program 51 times [2021-06-06 00:04:01,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:01,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276984566] [2021-06-06 00:04:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:01,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:01,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276984566] [2021-06-06 00:04:01,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276984566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:01,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509950461] [2021-06-06 00:04:01,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:01,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:04:01,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:01,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:04:01,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:02,348 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:04:02,557 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-06 00:04:02,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:02,651 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:02,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:04:02,652 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,022 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2021-06-06 00:04:03,022 INFO L628 ElimStorePlain]: treesize reduction 130, result has 76.2 percent of original size [2021-06-06 00:04:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,035 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:03,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:04:03,037 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,200 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:04:03,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:04:03,216 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,367 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:04:03,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:04:03,382 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,533 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:04:03,534 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:04:03,550 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,691 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-06 00:04:03,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,705 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:03,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:04:03,706 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,844 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:04:03,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:03,861 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:03,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:04:03,872 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:03,981 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:04:03,982 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:03,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:03,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:03,999 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:04,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:04,013 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:04,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:04,015 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:04,188 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-06 00:04:04,189 INFO L628 ElimStorePlain]: treesize reduction 23, result has 90.6 percent of original size [2021-06-06 00:04:04,196 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:04:04,196 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:156 [2021-06-06 00:04:04,357 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-06-06 00:04:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:04,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509950461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:04,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:04,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:04:04,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730327295] [2021-06-06 00:04:04,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:04:04,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:04,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:04:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:04:04,403 INFO L87 Difference]: Start difference. First operand 2360 states and 8149 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:05,234 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-06-06 00:04:05,544 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-06-06 00:04:05,762 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-06 00:04:05,979 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2021-06-06 00:04:06,338 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:04:06,808 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-06-06 00:04:07,237 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-06-06 00:04:07,624 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 123 [2021-06-06 00:04:07,830 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-06 00:04:08,335 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-06-06 00:04:08,750 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 127 [2021-06-06 00:04:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:09,238 INFO L93 Difference]: Finished difference Result 3613 states and 11812 transitions. [2021-06-06 00:04:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:04:09,241 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:09,246 INFO L225 Difference]: With dead ends: 3613 [2021-06-06 00:04:09,246 INFO L226 Difference]: Without dead ends: 3568 [2021-06-06 00:04:09,246 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 4951.4ms TimeCoverageRelationStatistics Valid=358, Invalid=1712, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:04:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-06-06 00:04:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 2356. [2021-06-06 00:04:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2355 states have (on average 3.456900212314225) internal successors, (8141), 2355 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 8141 transitions. [2021-06-06 00:04:09,279 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 8141 transitions. Word has length 26 [2021-06-06 00:04:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:09,279 INFO L482 AbstractCegarLoop]: Abstraction has 2356 states and 8141 transitions. [2021-06-06 00:04:09,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 8141 transitions. [2021-06-06 00:04:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:09,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:09,282 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:09,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3643 [2021-06-06 00:04:09,483 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:09,483 INFO L82 PathProgramCache]: Analyzing trace with hash 955312879, now seen corresponding path program 52 times [2021-06-06 00:04:09,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:09,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033782051] [2021-06-06 00:04:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:09,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:09,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033782051] [2021-06-06 00:04:09,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033782051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:09,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305500269] [2021-06-06 00:04:09,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:09,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:09,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:09,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:04:09,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,299 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:04:10,301 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:04:10,315 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,615 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2021-06-06 00:04:10,616 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.3 percent of original size [2021-06-06 00:04:10,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:04:10,631 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:10,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:04:10,644 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,795 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-06 00:04:10,795 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,808 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:10,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:04:10,809 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:04:10,822 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,950 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:04:10,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,966 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:10,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:04:10,968 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:10,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:10,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:10,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:04:10,984 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:11,108 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-06 00:04:11,109 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:11,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:11,123 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:11,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:04:11,124 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:11,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:11,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:11,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:11,138 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:11,242 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-06 00:04:11,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:11,248 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:04:11,248 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:170 [2021-06-06 00:04:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:11,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305500269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:11,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:11,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:04:11,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634197687] [2021-06-06 00:04:11,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:04:11,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:11,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:04:11,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:04:11,381 INFO L87 Difference]: Start difference. First operand 2356 states and 8141 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:12,540 INFO L93 Difference]: Finished difference Result 3106 states and 10468 transitions. [2021-06-06 00:04:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:04:12,540 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:12,545 INFO L225 Difference]: With dead ends: 3106 [2021-06-06 00:04:12,545 INFO L226 Difference]: Without dead ends: 3081 [2021-06-06 00:04:12,545 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1354.9ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:04:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2021-06-06 00:04:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2358. [2021-06-06 00:04:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2357 states have (on average 3.4560882477725925) internal successors, (8146), 2357 states have internal predecessors, (8146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 8146 transitions. [2021-06-06 00:04:12,574 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 8146 transitions. Word has length 26 [2021-06-06 00:04:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:12,574 INFO L482 AbstractCegarLoop]: Abstraction has 2358 states and 8146 transitions. [2021-06-06 00:04:12,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 8146 transitions. [2021-06-06 00:04:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:12,577 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:12,577 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:12,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3673,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:12,778 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash -441885819, now seen corresponding path program 61 times [2021-06-06 00:04:12,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:12,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15977681] [2021-06-06 00:04:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:12,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:12,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15977681] [2021-06-06 00:04:12,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15977681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:12,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256811021] [2021-06-06 00:04:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:12,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:04:12,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:13,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:04:13,419 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:04:13,427 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:04:13,434 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:04:13,441 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:04:13,448 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:04:13,455 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:04:13,462 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:04:13,469 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:04:13,477 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:04:13,484 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:04:13,491 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:04:13,498 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:04:13,505 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:04:13,511 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:13,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:13,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:04:13,517 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:13,537 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-06 00:04:13,538 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:04:13,538 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:04:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:13,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256811021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:13,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:13,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:04:13,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252768761] [2021-06-06 00:04:13,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:04:13,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:04:13,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:04:13,560 INFO L87 Difference]: Start difference. First operand 2358 states and 8146 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:14,823 INFO L93 Difference]: Finished difference Result 3316 states and 11054 transitions. [2021-06-06 00:04:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:04:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:14,828 INFO L225 Difference]: With dead ends: 3316 [2021-06-06 00:04:14,828 INFO L226 Difference]: Without dead ends: 3273 [2021-06-06 00:04:14,828 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 1144.3ms TimeCoverageRelationStatistics Valid=415, Invalid=1477, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:04:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2021-06-06 00:04:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2398. [2021-06-06 00:04:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 3.4568210262828534) internal successors, (8286), 2397 states have internal predecessors, (8286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 8286 transitions. [2021-06-06 00:04:14,861 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 8286 transitions. Word has length 26 [2021-06-06 00:04:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:14,861 INFO L482 AbstractCegarLoop]: Abstraction has 2398 states and 8286 transitions. [2021-06-06 00:04:14,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 8286 transitions. [2021-06-06 00:04:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:14,863 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:14,863 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:15,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3710,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:15,064 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 483608047, now seen corresponding path program 62 times [2021-06-06 00:04:15,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:15,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267579280] [2021-06-06 00:04:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:15,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:15,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267579280] [2021-06-06 00:04:15,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267579280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:15,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999273408] [2021-06-06 00:04:15,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:15,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:15,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:15,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:04:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:15,611 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_497], 5=[v_prenex_493, v_prenex_495]} [2021-06-06 00:04:15,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:15,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:15,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:04:15,621 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:15,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:15,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:04:15,627 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:15,717 INFO L628 ElimStorePlain]: treesize reduction 147, result has 42.1 percent of original size [2021-06-06 00:04:15,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-06 00:04:15,722 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:15,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:15,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:15,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:04:15,755 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:15,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:15,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:15,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:15,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:04:15,785 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:15,806 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:15,808 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:04:15,808 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:307, output treesize:32 [2021-06-06 00:04:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:15,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999273408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:15,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:15,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:04:15,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931978462] [2021-06-06 00:04:15,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:04:15,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:15,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:04:15,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:04:15,846 INFO L87 Difference]: Start difference. First operand 2398 states and 8286 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:17,263 INFO L93 Difference]: Finished difference Result 3303 states and 11080 transitions. [2021-06-06 00:04:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:04:17,263 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:17,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:17,268 INFO L225 Difference]: With dead ends: 3303 [2021-06-06 00:04:17,268 INFO L226 Difference]: Without dead ends: 3269 [2021-06-06 00:04:17,268 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1448.2ms TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:04:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-06-06 00:04:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2372. [2021-06-06 00:04:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2371 states have (on average 3.4571910586250527) internal successors, (8197), 2371 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 8197 transitions. [2021-06-06 00:04:17,298 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 8197 transitions. Word has length 26 [2021-06-06 00:04:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:17,298 INFO L482 AbstractCegarLoop]: Abstraction has 2372 states and 8197 transitions. [2021-06-06 00:04:17,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 8197 transitions. [2021-06-06 00:04:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:17,301 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:17,301 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:17,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3800,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:17,501 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:17,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1804783987, now seen corresponding path program 53 times [2021-06-06 00:04:17,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:17,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112784921] [2021-06-06 00:04:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:17,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:17,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112784921] [2021-06-06 00:04:17,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112784921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:17,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644471667] [2021-06-06 00:04:17,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:17,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:04:17,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-06 00:04:17,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:18,234 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:04:18,477 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2021-06-06 00:04:18,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:18,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:18,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:18,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:04:18,610 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:18,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:18,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:18,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:04:18,616 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:18,701 INFO L628 ElimStorePlain]: treesize reduction 69, result has 56.3 percent of original size [2021-06-06 00:04:18,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:18,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:04:18,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:18,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:18,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:18,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:04:18,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:04:18,739 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:18,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:18,767 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:04:18,767 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:201, output treesize:32 [2021-06-06 00:04:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:18,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644471667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:18,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:18,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:04:18,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959279941] [2021-06-06 00:04:18,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:04:18,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:18,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:04:18,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:04:18,804 INFO L87 Difference]: Start difference. First operand 2372 states and 8197 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:19,698 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:04:20,335 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 108 [2021-06-06 00:04:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:20,507 INFO L93 Difference]: Finished difference Result 3196 states and 10649 transitions. [2021-06-06 00:04:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:04:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:20,513 INFO L225 Difference]: With dead ends: 3196 [2021-06-06 00:04:20,513 INFO L226 Difference]: Without dead ends: 3151 [2021-06-06 00:04:20,513 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2030.2ms TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:04:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-06 00:04:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2383. [2021-06-06 00:04:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2382 states have (on average 3.4554995801847186) internal successors, (8231), 2382 states have internal predecessors, (8231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 8231 transitions. [2021-06-06 00:04:20,544 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 8231 transitions. Word has length 26 [2021-06-06 00:04:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:20,544 INFO L482 AbstractCegarLoop]: Abstraction has 2383 states and 8231 transitions. [2021-06-06 00:04:20,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 8231 transitions. [2021-06-06 00:04:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:20,547 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:20,547 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:20,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3814 [2021-06-06 00:04:20,761 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash 676615347, now seen corresponding path program 54 times [2021-06-06 00:04:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:20,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117941553] [2021-06-06 00:04:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:20,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:20,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117941553] [2021-06-06 00:04:20,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117941553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:20,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205956029] [2021-06-06 00:04:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:20,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:04:20,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:20,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:04:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:21,471 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-06 00:04:21,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:21,563 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-06 00:04:21,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 00:04:21,567 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:21,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:21,584 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:21,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2021-06-06 00:04:21,589 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:21,970 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2021-06-06 00:04:21,970 INFO L628 ElimStorePlain]: treesize reduction 32, result has 94.4 percent of original size [2021-06-06 00:04:21,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:21,994 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-06 00:04:21,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 30 [2021-06-06 00:04:21,996 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,019 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-06 00:04:22,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 34 [2021-06-06 00:04:22,023 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,202 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:04:22,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,225 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-06 00:04:22,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 31 [2021-06-06 00:04:22,226 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,248 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-06 00:04:22,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 38 [2021-06-06 00:04:22,250 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,436 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-06 00:04:22,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,456 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:22,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 38 [2021-06-06 00:04:22,459 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,479 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-06 00:04:22,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 34 [2021-06-06 00:04:22,482 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,808 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2021-06-06 00:04:22,808 INFO L628 ElimStorePlain]: treesize reduction 19, result has 95.7 percent of original size [2021-06-06 00:04:22,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,831 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-06 00:04:22,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 36 [2021-06-06 00:04:22,835 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:22,852 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-06 00:04:22,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 32 [2021-06-06 00:04:22,853 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:22,998 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-06 00:04:22,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:23,009 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:04:23,009 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:613, output treesize:428 [2021-06-06 00:04:23,160 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-06-06 00:04:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:23,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205956029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:23,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:23,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-06-06 00:04:23,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810530368] [2021-06-06 00:04:23,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:04:23,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:23,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:04:23,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:04:23,327 INFO L87 Difference]: Start difference. First operand 2383 states and 8231 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:24,476 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-06-06 00:04:24,910 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2021-06-06 00:04:25,340 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-06 00:04:25,527 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2021-06-06 00:04:25,702 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2021-06-06 00:04:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:25,841 INFO L93 Difference]: Finished difference Result 3199 states and 10757 transitions. [2021-06-06 00:04:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:04:25,841 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:25,845 INFO L225 Difference]: With dead ends: 3199 [2021-06-06 00:04:25,845 INFO L226 Difference]: Without dead ends: 3174 [2021-06-06 00:04:25,845 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2516.5ms TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:04:25,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-06-06 00:04:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2376. [2021-06-06 00:04:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2375 states have (on average 3.4530526315789474) internal successors, (8201), 2375 states have internal predecessors, (8201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 8201 transitions. [2021-06-06 00:04:25,874 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 8201 transitions. Word has length 26 [2021-06-06 00:04:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:25,874 INFO L482 AbstractCegarLoop]: Abstraction has 2376 states and 8201 transitions. [2021-06-06 00:04:25,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 8201 transitions. [2021-06-06 00:04:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:25,877 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:25,877 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:26,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3831,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:26,079 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:26,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1700400349, now seen corresponding path program 55 times [2021-06-06 00:04:26,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:26,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390432736] [2021-06-06 00:04:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:26,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:26,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390432736] [2021-06-06 00:04:26,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390432736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:26,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737727946] [2021-06-06 00:04:26,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:26,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:04:26,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:26,775 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:04:26,848 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_536, A, v_prenex_538, v_prenex_539, v_prenex_543, v_prenex_533, v_prenex_535], 3=[v_prenex_541]} [2021-06-06 00:04:26,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:26,862 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:26,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:04:26,863 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:26,877 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:26,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:04:26,879 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,205 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2021-06-06 00:04:27,205 INFO L628 ElimStorePlain]: treesize reduction 71, result has 84.0 percent of original size [2021-06-06 00:04:27,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,220 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:27,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:04:27,221 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,363 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:04:27,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,379 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:27,381 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,392 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:27,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:04:27,393 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,508 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:04:27,508 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,523 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:27,527 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,541 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:04:27,543 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,723 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-06-06 00:04:27,724 INFO L628 ElimStorePlain]: treesize reduction 18, result has 93.2 percent of original size [2021-06-06 00:04:27,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,735 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:27,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:04:27,737 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:04:27,840 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:27,921 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:27,931 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:27,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:04:27,933 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:28,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:28,030 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:28,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-06 00:04:28,033 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:28,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:28,109 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:04:28,109 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:507, output treesize:154 [2021-06-06 00:04:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:28,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737727946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:28,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:28,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:04:28,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653499734] [2021-06-06 00:04:28,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:04:28,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:28,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:04:28,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:04:28,226 INFO L87 Difference]: Start difference. First operand 2376 states and 8201 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:29,049 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:04:29,234 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-06 00:04:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:29,527 INFO L93 Difference]: Finished difference Result 3405 states and 11394 transitions. [2021-06-06 00:04:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:04:29,527 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:29,532 INFO L225 Difference]: With dead ends: 3405 [2021-06-06 00:04:29,532 INFO L226 Difference]: Without dead ends: 3375 [2021-06-06 00:04:29,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1505.6ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:04:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2021-06-06 00:04:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2353. [2021-06-06 00:04:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2352 states have (on average 3.453231292517007) internal successors, (8122), 2352 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 8122 transitions. [2021-06-06 00:04:29,566 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 8122 transitions. Word has length 26 [2021-06-06 00:04:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:29,566 INFO L482 AbstractCegarLoop]: Abstraction has 2353 states and 8122 transitions. [2021-06-06 00:04:29,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 8122 transitions. [2021-06-06 00:04:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:29,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:29,568 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:29,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3866,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:29,769 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:29,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1133811217, now seen corresponding path program 56 times [2021-06-06 00:04:29,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:29,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671891443] [2021-06-06 00:04:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:29,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:29,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671891443] [2021-06-06 00:04:29,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671891443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:29,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238443851] [2021-06-06 00:04:29,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:30,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:30,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:30,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:04:30,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:30,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,221 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:04:30,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:30,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:04:30,235 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,243 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:04:30,243 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,253 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:30,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:04:30,257 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,268 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:30,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:04:30,271 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,283 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:30,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-06 00:04:30,284 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,292 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:04:30,293 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,302 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:04:30,303 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,313 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:04:30,313 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,325 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:30,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-06 00:04:30,326 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,337 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:30,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:04:30,338 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,348 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:04:30,349 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,358 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:04:30,359 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,366 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:04:30,367 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,374 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:04:30,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:04:30,376 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:30,383 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:04:30,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:04:30,385 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:30,466 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.6 percent of original size [2021-06-06 00:04:30,467 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:04:30,467 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:95 [2021-06-06 00:04:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:30,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238443851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:30,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:30,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:04:30,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979252080] [2021-06-06 00:04:30,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:04:30,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:04:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:04:30,564 INFO L87 Difference]: Start difference. First operand 2353 states and 8122 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:31,447 INFO L93 Difference]: Finished difference Result 3078 states and 10413 transitions. [2021-06-06 00:04:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:04:31,447 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:31,451 INFO L225 Difference]: With dead ends: 3078 [2021-06-06 00:04:31,451 INFO L226 Difference]: Without dead ends: 3063 [2021-06-06 00:04:31,451 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 904.6ms TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:04:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-06-06 00:04:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2355. [2021-06-06 00:04:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2354 states have (on average 3.45624468988955) internal successors, (8136), 2354 states have internal predecessors, (8136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 8136 transitions. [2021-06-06 00:04:31,480 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 8136 transitions. Word has length 26 [2021-06-06 00:04:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:31,480 INFO L482 AbstractCegarLoop]: Abstraction has 2355 states and 8136 transitions. [2021-06-06 00:04:31,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 8136 transitions. [2021-06-06 00:04:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:04:31,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:31,482 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:31,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3896 [2021-06-06 00:04:31,683 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash 118535907, now seen corresponding path program 63 times [2021-06-06 00:04:31,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:31,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614657064] [2021-06-06 00:04:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:31,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:31,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614657064] [2021-06-06 00:04:31,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614657064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:31,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703475540] [2021-06-06 00:04:31,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:31,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:04:31,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:31,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:04:31,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:32,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,307 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:04:32,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2021-06-06 00:04:32,308 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,331 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:32,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:04:32,337 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,362 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:04:32,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:04:32,368 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,391 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:04:32,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-06 00:04:32,393 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,418 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:04:32,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2021-06-06 00:04:32,419 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,435 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:04:32,436 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,461 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:04:32,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:04:32,465 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,481 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:04:32,482 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,497 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:04:32,498 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,513 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:04:32,514 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,529 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:04:32,529 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,552 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:04:32,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:04:32,554 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,577 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:04:32,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:04:32,578 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,593 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:04:32,594 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,608 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:04:32,609 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:04:32,618 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:04:32,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:04:32,619 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:04:32,707 INFO L628 ElimStorePlain]: treesize reduction 92, result has 50.3 percent of original size [2021-06-06 00:04:32,709 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:04:32,709 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-06 00:04:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:32,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703475540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:32,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:32,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:04:32,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938213404] [2021-06-06 00:04:32,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:04:32,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:32,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:04:32,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:04:32,793 INFO L87 Difference]: Start difference. First operand 2355 states and 8136 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:35,216 INFO L93 Difference]: Finished difference Result 3597 states and 11910 transitions. [2021-06-06 00:04:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:04:35,216 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-06 00:04:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:35,221 INFO L225 Difference]: With dead ends: 3597 [2021-06-06 00:04:35,221 INFO L226 Difference]: Without dead ends: 3553 [2021-06-06 00:04:35,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2048.8ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:04:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2021-06-06 00:04:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 2397. [2021-06-06 00:04:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 3.451585976627713) internal successors, (8270), 2396 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 8270 transitions. [2021-06-06 00:04:35,257 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 8270 transitions. Word has length 26 [2021-06-06 00:04:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:35,257 INFO L482 AbstractCegarLoop]: Abstraction has 2397 states and 8270 transitions. [2021-06-06 00:04:35,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 8270 transitions. [2021-06-06 00:04:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:35,260 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:35,260 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:35,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3917 [2021-06-06 00:04:35,462 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1407294025, now seen corresponding path program 57 times [2021-06-06 00:04:35,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:35,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509999006] [2021-06-06 00:04:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:35,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:35,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509999006] [2021-06-06 00:04:35,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509999006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:35,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310534273] [2021-06-06 00:04:35,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:35,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:04:35,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:35,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:35,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:35,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310534273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:35,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:35,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:35,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526908560] [2021-06-06 00:04:35,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:35,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:35,624 INFO L87 Difference]: Start difference. First operand 2397 states and 8270 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:36,496 INFO L93 Difference]: Finished difference Result 5478 states and 17219 transitions. [2021-06-06 00:04:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:04:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:36,503 INFO L225 Difference]: With dead ends: 5478 [2021-06-06 00:04:36,503 INFO L226 Difference]: Without dead ends: 5478 [2021-06-06 00:04:36,504 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 518.8ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:04:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2021-06-06 00:04:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 2593. [2021-06-06 00:04:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2592 states have (on average 3.493827160493827) internal successors, (9056), 2592 states have internal predecessors, (9056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 9056 transitions. [2021-06-06 00:04:36,550 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 9056 transitions. Word has length 28 [2021-06-06 00:04:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:36,551 INFO L482 AbstractCegarLoop]: Abstraction has 2593 states and 9056 transitions. [2021-06-06 00:04:36,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 9056 transitions. [2021-06-06 00:04:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:36,554 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:36,554 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:36,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4018,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:36,754 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:36,754 INFO L82 PathProgramCache]: Analyzing trace with hash 430975181, now seen corresponding path program 58 times [2021-06-06 00:04:36,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:36,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131787143] [2021-06-06 00:04:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:36,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:36,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131787143] [2021-06-06 00:04:36,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131787143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:36,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114999935] [2021-06-06 00:04:36,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:36,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:36,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:36,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:36,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:36,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114999935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:36,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:36,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:04:36,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635426449] [2021-06-06 00:04:36,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:04:36,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:36,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:04:36,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:04:36,946 INFO L87 Difference]: Start difference. First operand 2593 states and 9056 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:38,124 INFO L93 Difference]: Finished difference Result 7165 states and 22139 transitions. [2021-06-06 00:04:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:04:38,124 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:38,134 INFO L225 Difference]: With dead ends: 7165 [2021-06-06 00:04:38,135 INFO L226 Difference]: Without dead ends: 7165 [2021-06-06 00:04:38,135 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 706.6ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:04:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2021-06-06 00:04:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 2604. [2021-06-06 00:04:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2603 states have (on average 3.4998079139454474) internal successors, (9110), 2603 states have internal predecessors, (9110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 9110 transitions. [2021-06-06 00:04:38,210 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 9110 transitions. Word has length 28 [2021-06-06 00:04:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:38,210 INFO L482 AbstractCegarLoop]: Abstraction has 2604 states and 9110 transitions. [2021-06-06 00:04:38,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 9110 transitions. [2021-06-06 00:04:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:38,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:38,213 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:38,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4019 [2021-06-06 00:04:38,414 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash 997927261, now seen corresponding path program 59 times [2021-06-06 00:04:38,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:38,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908038883] [2021-06-06 00:04:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:38,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:38,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908038883] [2021-06-06 00:04:38,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908038883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:38,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734995741] [2021-06-06 00:04:38,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:38,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:04:38,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:38,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:38,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:38,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734995741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:38,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:38,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:04:38,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268366034] [2021-06-06 00:04:38,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:04:38,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:38,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:04:38,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:04:38,580 INFO L87 Difference]: Start difference. First operand 2604 states and 9110 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:39,716 INFO L93 Difference]: Finished difference Result 6563 states and 20685 transitions. [2021-06-06 00:04:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:04:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:39,725 INFO L225 Difference]: With dead ends: 6563 [2021-06-06 00:04:39,725 INFO L226 Difference]: Without dead ends: 6563 [2021-06-06 00:04:39,725 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 687.8ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-06 00:04:39,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2021-06-06 00:04:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 2552. [2021-06-06 00:04:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2551 states have (on average 3.480203841630733) internal successors, (8878), 2551 states have internal predecessors, (8878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 8878 transitions. [2021-06-06 00:04:39,779 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 8878 transitions. Word has length 28 [2021-06-06 00:04:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:39,779 INFO L482 AbstractCegarLoop]: Abstraction has 2552 states and 8878 transitions. [2021-06-06 00:04:39,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 8878 transitions. [2021-06-06 00:04:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:39,782 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:39,782 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:39,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4020,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:39,983 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:39,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2115011713, now seen corresponding path program 60 times [2021-06-06 00:04:39,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:39,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187934120] [2021-06-06 00:04:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:40,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:40,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187934120] [2021-06-06 00:04:40,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187934120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:40,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663424044] [2021-06-06 00:04:40,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:40,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:04:40,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:40,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:40,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:40,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663424044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:40,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:40,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090577500] [2021-06-06 00:04:40,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:40,144 INFO L87 Difference]: Start difference. First operand 2552 states and 8878 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:41,241 INFO L93 Difference]: Finished difference Result 5564 states and 17386 transitions. [2021-06-06 00:04:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:04:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:41,249 INFO L225 Difference]: With dead ends: 5564 [2021-06-06 00:04:41,249 INFO L226 Difference]: Without dead ends: 5564 [2021-06-06 00:04:41,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 644.6ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:04:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-06-06 00:04:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 2570. [2021-06-06 00:04:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2569 states have (on average 3.474114441416894) internal successors, (8925), 2569 states have internal predecessors, (8925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 8925 transitions. [2021-06-06 00:04:41,297 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 8925 transitions. Word has length 28 [2021-06-06 00:04:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:41,297 INFO L482 AbstractCegarLoop]: Abstraction has 2570 states and 8925 transitions. [2021-06-06 00:04:41,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 8925 transitions. [2021-06-06 00:04:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:41,300 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:41,301 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:41,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4021 [2021-06-06 00:04:41,501 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:41,501 INFO L82 PathProgramCache]: Analyzing trace with hash 970325317, now seen corresponding path program 64 times [2021-06-06 00:04:41,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:41,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002204203] [2021-06-06 00:04:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:41,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:41,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002204203] [2021-06-06 00:04:41,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002204203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:41,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179000337] [2021-06-06 00:04:41,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:41,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:41,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:41,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:41,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:41,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179000337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:41,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:41,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:04:41,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797989019] [2021-06-06 00:04:41,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:41,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:41,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:41,647 INFO L87 Difference]: Start difference. First operand 2570 states and 8925 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:42,218 INFO L93 Difference]: Finished difference Result 4970 states and 15740 transitions. [2021-06-06 00:04:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:04:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:42,225 INFO L225 Difference]: With dead ends: 4970 [2021-06-06 00:04:42,225 INFO L226 Difference]: Without dead ends: 4970 [2021-06-06 00:04:42,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 303.5ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:04:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-06-06 00:04:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 2640. [2021-06-06 00:04:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2639 states have (on average 3.4588859416445623) internal successors, (9128), 2639 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 9128 transitions. [2021-06-06 00:04:42,279 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 9128 transitions. Word has length 28 [2021-06-06 00:04:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:42,279 INFO L482 AbstractCegarLoop]: Abstraction has 2640 states and 9128 transitions. [2021-06-06 00:04:42,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 9128 transitions. [2021-06-06 00:04:42,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:42,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:42,282 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:42,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4022 [2021-06-06 00:04:42,489 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash 828956685, now seen corresponding path program 61 times [2021-06-06 00:04:42,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:42,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529596572] [2021-06-06 00:04:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:04:42,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:42,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529596572] [2021-06-06 00:04:42,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529596572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:42,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967044235] [2021-06-06 00:04:42,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:42,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:04:42,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:04:42,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967044235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:42,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:42,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:04:42,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126112024] [2021-06-06 00:04:42,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:04:42,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:42,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:04:42,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:04:42,601 INFO L87 Difference]: Start difference. First operand 2640 states and 9128 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:42,774 INFO L93 Difference]: Finished difference Result 4201 states and 13809 transitions. [2021-06-06 00:04:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:04:42,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:42,780 INFO L225 Difference]: With dead ends: 4201 [2021-06-06 00:04:42,780 INFO L226 Difference]: Without dead ends: 4150 [2021-06-06 00:04:42,781 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:04:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2021-06-06 00:04:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 2983. [2021-06-06 00:04:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2982 states have (on average 3.5087189805499666) internal successors, (10463), 2982 states have internal predecessors, (10463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 10463 transitions. [2021-06-06 00:04:42,825 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 10463 transitions. Word has length 28 [2021-06-06 00:04:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:42,825 INFO L482 AbstractCegarLoop]: Abstraction has 2983 states and 10463 transitions. [2021-06-06 00:04:42,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 10463 transitions. [2021-06-06 00:04:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:42,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:42,829 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:43,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4023 [2021-06-06 00:04:43,045 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:43,045 INFO L82 PathProgramCache]: Analyzing trace with hash 391987977, now seen corresponding path program 62 times [2021-06-06 00:04:43,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:43,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921632505] [2021-06-06 00:04:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:43,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:43,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921632505] [2021-06-06 00:04:43,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921632505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:43,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106954716] [2021-06-06 00:04:43,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:43,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:43,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:43,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:04:43,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:43,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106954716] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:43,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:43,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:04:43,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653653352] [2021-06-06 00:04:43,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:43,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:43,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:43,178 INFO L87 Difference]: Start difference. First operand 2983 states and 10463 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:43,736 INFO L93 Difference]: Finished difference Result 4805 states and 15497 transitions. [2021-06-06 00:04:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:04:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:43,743 INFO L225 Difference]: With dead ends: 4805 [2021-06-06 00:04:43,743 INFO L226 Difference]: Without dead ends: 4758 [2021-06-06 00:04:43,743 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 346.7ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:04:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2021-06-06 00:04:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3157. [2021-06-06 00:04:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3156 states have (on average 3.5218631178707223) internal successors, (11115), 3156 states have internal predecessors, (11115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 11115 transitions. [2021-06-06 00:04:43,794 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 11115 transitions. Word has length 28 [2021-06-06 00:04:43,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:43,794 INFO L482 AbstractCegarLoop]: Abstraction has 3157 states and 11115 transitions. [2021-06-06 00:04:43,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 11115 transitions. [2021-06-06 00:04:43,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:43,798 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:43,798 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:43,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4024 [2021-06-06 00:04:43,999 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:43,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1928077453, now seen corresponding path program 63 times [2021-06-06 00:04:43,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:43,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632293426] [2021-06-06 00:04:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:44,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:44,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632293426] [2021-06-06 00:04:44,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632293426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:44,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131246627] [2021-06-06 00:04:44,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:44,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:04:44,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:44,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:04:44,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:44,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131246627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:44,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:44,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:04:44,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734301693] [2021-06-06 00:04:44,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:44,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:44,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:44,157 INFO L87 Difference]: Start difference. First operand 3157 states and 11115 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:44,836 INFO L93 Difference]: Finished difference Result 5122 states and 16201 transitions. [2021-06-06 00:04:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:04:44,837 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:44,843 INFO L225 Difference]: With dead ends: 5122 [2021-06-06 00:04:44,844 INFO L226 Difference]: Without dead ends: 5096 [2021-06-06 00:04:44,844 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 422.0ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:04:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2021-06-06 00:04:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 3181. [2021-06-06 00:04:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 3180 states have (on average 3.5276729559748428) internal successors, (11218), 3180 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 11218 transitions. [2021-06-06 00:04:44,909 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 11218 transitions. Word has length 28 [2021-06-06 00:04:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:44,909 INFO L482 AbstractCegarLoop]: Abstraction has 3181 states and 11218 transitions. [2021-06-06 00:04:44,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 11218 transitions. [2021-06-06 00:04:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:44,913 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:44,913 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:45,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4025,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:45,117 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1694477061, now seen corresponding path program 64 times [2021-06-06 00:04:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:45,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679710305] [2021-06-06 00:04:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:45,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:45,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679710305] [2021-06-06 00:04:45,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679710305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:45,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417661604] [2021-06-06 00:04:45,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:45,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:45,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:45,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:04:45,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:45,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417661604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:45,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:45,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:04:45,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653166227] [2021-06-06 00:04:45,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:45,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:45,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:45,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:45,268 INFO L87 Difference]: Start difference. First operand 3181 states and 11218 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:45,939 INFO L93 Difference]: Finished difference Result 5123 states and 16231 transitions. [2021-06-06 00:04:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:04:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:45,946 INFO L225 Difference]: With dead ends: 5123 [2021-06-06 00:04:45,946 INFO L226 Difference]: Without dead ends: 5117 [2021-06-06 00:04:45,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 418.4ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:04:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2021-06-06 00:04:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 3184. [2021-06-06 00:04:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 3.522148916116871) internal successors, (11211), 3183 states have internal predecessors, (11211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 11211 transitions. [2021-06-06 00:04:46,002 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 11211 transitions. Word has length 28 [2021-06-06 00:04:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:46,002 INFO L482 AbstractCegarLoop]: Abstraction has 3184 states and 11211 transitions. [2021-06-06 00:04:46,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 11211 transitions. [2021-06-06 00:04:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:46,006 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:46,006 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:46,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4026,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:46,221 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:46,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1551691313, now seen corresponding path program 65 times [2021-06-06 00:04:46,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:46,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739158603] [2021-06-06 00:04:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:46,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:46,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739158603] [2021-06-06 00:04:46,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739158603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:46,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914807649] [2021-06-06 00:04:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:46,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:04:46,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:46,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:04:46,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:46,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914807649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:46,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:46,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:04:46,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16375674] [2021-06-06 00:04:46,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:04:46,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:04:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:04:46,358 INFO L87 Difference]: Start difference. First operand 3184 states and 11211 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:46,883 INFO L93 Difference]: Finished difference Result 5875 states and 18946 transitions. [2021-06-06 00:04:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:04:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:46,892 INFO L225 Difference]: With dead ends: 5875 [2021-06-06 00:04:46,892 INFO L226 Difference]: Without dead ends: 5792 [2021-06-06 00:04:46,892 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 293.9ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:04:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2021-06-06 00:04:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 3343. [2021-06-06 00:04:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3342 states have (on average 3.5556552962298027) internal successors, (11883), 3342 states have internal predecessors, (11883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 11883 transitions. [2021-06-06 00:04:46,954 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 11883 transitions. Word has length 28 [2021-06-06 00:04:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:46,954 INFO L482 AbstractCegarLoop]: Abstraction has 3343 states and 11883 transitions. [2021-06-06 00:04:46,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 11883 transitions. [2021-06-06 00:04:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:46,958 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:46,958 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:47,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4027,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:47,159 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash -659497231, now seen corresponding path program 66 times [2021-06-06 00:04:47,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:47,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605609422] [2021-06-06 00:04:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:04:47,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:47,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605609422] [2021-06-06 00:04:47,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605609422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:47,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372570331] [2021-06-06 00:04:47,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:47,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:04:47,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:47,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:04:47,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:04:47,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372570331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:47,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:47,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-06 00:04:47,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900945710] [2021-06-06 00:04:47,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:04:47,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:47,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:04:47,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:04:47,275 INFO L87 Difference]: Start difference. First operand 3343 states and 11883 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:47,428 INFO L93 Difference]: Finished difference Result 4624 states and 15329 transitions. [2021-06-06 00:04:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:04:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:47,435 INFO L225 Difference]: With dead ends: 4624 [2021-06-06 00:04:47,435 INFO L226 Difference]: Without dead ends: 4624 [2021-06-06 00:04:47,435 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:04:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-06-06 00:04:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 3098. [2021-06-06 00:04:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3097 states have (on average 3.5298676138198255) internal successors, (10932), 3097 states have internal predecessors, (10932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 10932 transitions. [2021-06-06 00:04:47,493 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 10932 transitions. Word has length 28 [2021-06-06 00:04:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:47,493 INFO L482 AbstractCegarLoop]: Abstraction has 3098 states and 10932 transitions. [2021-06-06 00:04:47,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 10932 transitions. [2021-06-06 00:04:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:47,497 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:47,497 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:47,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4028,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:47,698 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:47,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2006178797, now seen corresponding path program 67 times [2021-06-06 00:04:47,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:47,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281558416] [2021-06-06 00:04:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:47,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:47,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281558416] [2021-06-06 00:04:47,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281558416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:47,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405409501] [2021-06-06 00:04:47,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:04:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:47,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:47,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:47,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405409501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:47,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:47,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:04:47,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903406647] [2021-06-06 00:04:47,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:04:47,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:47,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:04:47,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:04:47,833 INFO L87 Difference]: Start difference. First operand 3098 states and 10932 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:48,517 INFO L93 Difference]: Finished difference Result 6516 states and 20731 transitions. [2021-06-06 00:04:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:04:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:48,526 INFO L225 Difference]: With dead ends: 6516 [2021-06-06 00:04:48,526 INFO L226 Difference]: Without dead ends: 6516 [2021-06-06 00:04:48,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 378.4ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:04:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2021-06-06 00:04:48,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 3116. [2021-06-06 00:04:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3115 states have (on average 3.5296950240770464) internal successors, (10995), 3115 states have internal predecessors, (10995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 10995 transitions. [2021-06-06 00:04:48,591 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 10995 transitions. Word has length 28 [2021-06-06 00:04:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:48,591 INFO L482 AbstractCegarLoop]: Abstraction has 3116 states and 10995 transitions. [2021-06-06 00:04:48,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 10995 transitions. [2021-06-06 00:04:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:48,595 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:48,595 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:48,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4029,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:48,796 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:48,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1221264703, now seen corresponding path program 68 times [2021-06-06 00:04:48,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:48,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338190764] [2021-06-06 00:04:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:48,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:48,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338190764] [2021-06-06 00:04:48,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338190764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:48,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238752638] [2021-06-06 00:04:48,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:48,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:48,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:48,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:48,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:48,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238752638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:48,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:48,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:04:48,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968760352] [2021-06-06 00:04:48,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:04:48,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:48,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:04:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:04:48,937 INFO L87 Difference]: Start difference. First operand 3116 states and 10995 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:49,646 INFO L93 Difference]: Finished difference Result 6771 states and 21511 transitions. [2021-06-06 00:04:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:04:49,646 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:49,656 INFO L225 Difference]: With dead ends: 6771 [2021-06-06 00:04:49,656 INFO L226 Difference]: Without dead ends: 6771 [2021-06-06 00:04:49,656 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 407.6ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 00:04:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2021-06-06 00:04:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 3210. [2021-06-06 00:04:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3209 states have (on average 3.5219694608912433) internal successors, (11302), 3209 states have internal predecessors, (11302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 11302 transitions. [2021-06-06 00:04:49,725 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 11302 transitions. Word has length 28 [2021-06-06 00:04:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:49,725 INFO L482 AbstractCegarLoop]: Abstraction has 3210 states and 11302 transitions. [2021-06-06 00:04:49,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 11302 transitions. [2021-06-06 00:04:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:49,729 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:49,729 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:49,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4030 [2021-06-06 00:04:49,930 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1990679937, now seen corresponding path program 69 times [2021-06-06 00:04:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:49,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660670096] [2021-06-06 00:04:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:49,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:49,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660670096] [2021-06-06 00:04:49,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660670096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:49,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945194898] [2021-06-06 00:04:49,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:49,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:04:49,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:49,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:04:49,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:50,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945194898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:50,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:50,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:04:50,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504146525] [2021-06-06 00:04:50,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:04:50,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:04:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:04:50,072 INFO L87 Difference]: Start difference. First operand 3210 states and 11302 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:50,675 INFO L93 Difference]: Finished difference Result 6952 states and 22145 transitions. [2021-06-06 00:04:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:04:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:50,685 INFO L225 Difference]: With dead ends: 6952 [2021-06-06 00:04:50,686 INFO L226 Difference]: Without dead ends: 6916 [2021-06-06 00:04:50,686 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 355.5ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:04:50,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-06-06 00:04:50,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 3597. [2021-06-06 00:04:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 3.5489432703003336) internal successors, (12762), 3596 states have internal predecessors, (12762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 12762 transitions. [2021-06-06 00:04:50,760 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 12762 transitions. Word has length 28 [2021-06-06 00:04:50,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:50,761 INFO L482 AbstractCegarLoop]: Abstraction has 3597 states and 12762 transitions. [2021-06-06 00:04:50,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 12762 transitions. [2021-06-06 00:04:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:50,765 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:50,765 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:50,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4031 [2021-06-06 00:04:50,966 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:50,966 INFO L82 PathProgramCache]: Analyzing trace with hash -833209241, now seen corresponding path program 70 times [2021-06-06 00:04:50,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:50,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251957752] [2021-06-06 00:04:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:50,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:50,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251957752] [2021-06-06 00:04:50,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251957752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:50,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029072799] [2021-06-06 00:04:50,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:51,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:51,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:04:51,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:51,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029072799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:51,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:51,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:04:51,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304519176] [2021-06-06 00:04:51,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:04:51,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:04:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:04:51,086 INFO L87 Difference]: Start difference. First operand 3597 states and 12762 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:51,672 INFO L93 Difference]: Finished difference Result 7145 states and 22690 transitions. [2021-06-06 00:04:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:04:51,672 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:51,682 INFO L225 Difference]: With dead ends: 7145 [2021-06-06 00:04:51,682 INFO L226 Difference]: Without dead ends: 7145 [2021-06-06 00:04:51,683 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:04:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2021-06-06 00:04:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 3308. [2021-06-06 00:04:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3307 states have (on average 3.5119443604475356) internal successors, (11614), 3307 states have internal predecessors, (11614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 11614 transitions. [2021-06-06 00:04:51,756 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 11614 transitions. Word has length 28 [2021-06-06 00:04:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:51,756 INFO L482 AbstractCegarLoop]: Abstraction has 3308 states and 11614 transitions. [2021-06-06 00:04:51,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 11614 transitions. [2021-06-06 00:04:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:51,760 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:51,760 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:51,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4032,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:51,961 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:51,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1266085845, now seen corresponding path program 71 times [2021-06-06 00:04:51,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:51,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808353629] [2021-06-06 00:04:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:52,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:52,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808353629] [2021-06-06 00:04:52,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808353629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:52,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458410841] [2021-06-06 00:04:52,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:52,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:04:52,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:52,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:52,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:52,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458410841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:52,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:52,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:04:52,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35262301] [2021-06-06 00:04:52,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:04:52,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:52,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:04:52,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:04:52,088 INFO L87 Difference]: Start difference. First operand 3308 states and 11614 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:52,733 INFO L93 Difference]: Finished difference Result 6241 states and 20184 transitions. [2021-06-06 00:04:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:04:52,733 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:52,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:52,742 INFO L225 Difference]: With dead ends: 6241 [2021-06-06 00:04:52,743 INFO L226 Difference]: Without dead ends: 6237 [2021-06-06 00:04:52,743 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 377.3ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:04:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-06-06 00:04:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 3068. [2021-06-06 00:04:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.53635474404956) internal successors, (10846), 3067 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10846 transitions. [2021-06-06 00:04:52,802 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10846 transitions. Word has length 28 [2021-06-06 00:04:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:52,802 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 10846 transitions. [2021-06-06 00:04:52,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10846 transitions. [2021-06-06 00:04:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:52,805 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:52,806 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:53,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4033 [2021-06-06 00:04:53,006 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:53,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1538095035, now seen corresponding path program 72 times [2021-06-06 00:04:53,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:53,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438641689] [2021-06-06 00:04:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:53,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:53,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438641689] [2021-06-06 00:04:53,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438641689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:53,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440778650] [2021-06-06 00:04:53,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:53,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:04:53,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:53,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:53,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:53,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440778650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:53,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:53,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:04:53,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975371271] [2021-06-06 00:04:53,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:53,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:53,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:53,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:53,179 INFO L87 Difference]: Start difference. First operand 3068 states and 10846 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:54,138 INFO L93 Difference]: Finished difference Result 9481 states and 30975 transitions. [2021-06-06 00:04:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:04:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:54,153 INFO L225 Difference]: With dead ends: 9481 [2021-06-06 00:04:54,153 INFO L226 Difference]: Without dead ends: 9481 [2021-06-06 00:04:54,153 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 591.9ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:04:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2021-06-06 00:04:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 3244. [2021-06-06 00:04:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3243 states have (on average 3.602836879432624) internal successors, (11684), 3243 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 11684 transitions. [2021-06-06 00:04:54,244 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 11684 transitions. Word has length 28 [2021-06-06 00:04:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:54,244 INFO L482 AbstractCegarLoop]: Abstraction has 3244 states and 11684 transitions. [2021-06-06 00:04:54,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 11684 transitions. [2021-06-06 00:04:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:54,249 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:54,249 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:54,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4034 [2021-06-06 00:04:54,449 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:54,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:54,449 INFO L82 PathProgramCache]: Analyzing trace with hash -971142955, now seen corresponding path program 73 times [2021-06-06 00:04:54,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:54,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747623916] [2021-06-06 00:04:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:54,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:54,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747623916] [2021-06-06 00:04:54,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747623916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:54,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106115237] [2021-06-06 00:04:54,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:54,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:54,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106115237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:54,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:54,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:04:54,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281985440] [2021-06-06 00:04:54,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:54,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:54,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:54,613 INFO L87 Difference]: Start difference. First operand 3244 states and 11684 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:55,567 INFO L93 Difference]: Finished difference Result 9310 states and 30510 transitions. [2021-06-06 00:04:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:04:55,567 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:55,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:55,582 INFO L225 Difference]: With dead ends: 9310 [2021-06-06 00:04:55,582 INFO L226 Difference]: Without dead ends: 9310 [2021-06-06 00:04:55,582 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 582.6ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:04:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9310 states. [2021-06-06 00:04:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9310 to 3216. [2021-06-06 00:04:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3215 states have (on average 3.5878693623639193) internal successors, (11535), 3215 states have internal predecessors, (11535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 11535 transitions. [2021-06-06 00:04:55,668 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 11535 transitions. Word has length 28 [2021-06-06 00:04:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:55,668 INFO L482 AbstractCegarLoop]: Abstraction has 3216 states and 11535 transitions. [2021-06-06 00:04:55,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 11535 transitions. [2021-06-06 00:04:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:55,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:55,672 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:55,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4035 [2021-06-06 00:04:55,872 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:55,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2143488813, now seen corresponding path program 74 times [2021-06-06 00:04:55,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:55,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553406972] [2021-06-06 00:04:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:55,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:55,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553406972] [2021-06-06 00:04:55,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553406972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:55,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816631852] [2021-06-06 00:04:55,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:55,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:55,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:55,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:55,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:56,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816631852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:56,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:56,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:04:56,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514494533] [2021-06-06 00:04:56,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:56,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:56,020 INFO L87 Difference]: Start difference. First operand 3216 states and 11535 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:56,897 INFO L93 Difference]: Finished difference Result 8753 states and 27774 transitions. [2021-06-06 00:04:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:04:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:56,911 INFO L225 Difference]: With dead ends: 8753 [2021-06-06 00:04:56,911 INFO L226 Difference]: Without dead ends: 8753 [2021-06-06 00:04:56,912 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 493.7ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:04:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2021-06-06 00:04:56,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 3236. [2021-06-06 00:04:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 3.591035548686244) internal successors, (11617), 3235 states have internal predecessors, (11617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 11617 transitions. [2021-06-06 00:04:57,000 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 11617 transitions. Word has length 28 [2021-06-06 00:04:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:57,000 INFO L482 AbstractCegarLoop]: Abstraction has 3236 states and 11617 transitions. [2021-06-06 00:04:57,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 11617 transitions. [2021-06-06 00:04:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:57,004 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:57,004 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:57,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4036,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:57,205 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:57,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2062112725, now seen corresponding path program 75 times [2021-06-06 00:04:57,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:57,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617234136] [2021-06-06 00:04:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:57,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:57,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617234136] [2021-06-06 00:04:57,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617234136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:57,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776580397] [2021-06-06 00:04:57,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:57,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:04:57,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:57,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:57,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776580397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:57,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:57,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:04:57,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832005792] [2021-06-06 00:04:57,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:57,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:57,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:57,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:57,335 INFO L87 Difference]: Start difference. First operand 3236 states and 11617 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:58,201 INFO L93 Difference]: Finished difference Result 8265 states and 26591 transitions. [2021-06-06 00:04:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:04:58,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:58,214 INFO L225 Difference]: With dead ends: 8265 [2021-06-06 00:04:58,215 INFO L226 Difference]: Without dead ends: 8257 [2021-06-06 00:04:58,215 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 467.1ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:04:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2021-06-06 00:04:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 3218. [2021-06-06 00:04:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 3.5871930369909855) internal successors, (11540), 3217 states have internal predecessors, (11540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 11540 transitions. [2021-06-06 00:04:58,294 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 11540 transitions. Word has length 28 [2021-06-06 00:04:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:58,294 INFO L482 AbstractCegarLoop]: Abstraction has 3218 states and 11540 transitions. [2021-06-06 00:04:58,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 11540 transitions. [2021-06-06 00:04:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:58,299 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:58,299 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:58,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4037,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:58,499 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:58,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:58,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1131455509, now seen corresponding path program 76 times [2021-06-06 00:04:58,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:58,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627035967] [2021-06-06 00:04:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:58,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:58,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627035967] [2021-06-06 00:04:58,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627035967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:58,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604720278] [2021-06-06 00:04:58,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:58,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:58,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:58,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:58,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:58,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604720278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:58,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:58,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:04:58,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418044379] [2021-06-06 00:04:58,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:58,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:58,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:58,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:58,643 INFO L87 Difference]: Start difference. First operand 3218 states and 11540 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:59,528 INFO L93 Difference]: Finished difference Result 8190 states and 26354 transitions. [2021-06-06 00:04:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-06 00:04:59,528 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:04:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:59,540 INFO L225 Difference]: With dead ends: 8190 [2021-06-06 00:04:59,540 INFO L226 Difference]: Without dead ends: 8190 [2021-06-06 00:04:59,541 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 508.7ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:04:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8190 states. [2021-06-06 00:04:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8190 to 3234. [2021-06-06 00:04:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 3.589236003711723) internal successors, (11604), 3233 states have internal predecessors, (11604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 11604 transitions. [2021-06-06 00:04:59,618 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 11604 transitions. Word has length 28 [2021-06-06 00:04:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:59,618 INFO L482 AbstractCegarLoop]: Abstraction has 3234 states and 11604 transitions. [2021-06-06 00:04:59,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 11604 transitions. [2021-06-06 00:04:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:59,622 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:59,622 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:04:59,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4038,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:59,822 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:59,823 INFO L82 PathProgramCache]: Analyzing trace with hash 511583645, now seen corresponding path program 77 times [2021-06-06 00:04:59,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:59,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985854725] [2021-06-06 00:04:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:59,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:59,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985854725] [2021-06-06 00:04:59,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985854725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:59,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104874775] [2021-06-06 00:04:59,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:59,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 00:04:59,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:59,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:59,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104874775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:59,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:59,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:04:59,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906998252] [2021-06-06 00:04:59,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:59,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:59,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:59,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:59,963 INFO L87 Difference]: Start difference. First operand 3234 states and 11604 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:00,856 INFO L93 Difference]: Finished difference Result 7851 states and 25552 transitions. [2021-06-06 00:05:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:05:00,856 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:00,867 INFO L225 Difference]: With dead ends: 7851 [2021-06-06 00:05:00,867 INFO L226 Difference]: Without dead ends: 7843 [2021-06-06 00:05:00,868 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 509.4ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:05:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2021-06-06 00:05:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 2991. [2021-06-06 00:05:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 3.5123745819397993) internal successors, (10502), 2990 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 10502 transitions. [2021-06-06 00:05:00,935 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 10502 transitions. Word has length 28 [2021-06-06 00:05:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:00,936 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 10502 transitions. [2021-06-06 00:05:00,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 10502 transitions. [2021-06-06 00:05:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:00,939 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:00,939 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:01,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4039,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:01,139 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:01,140 INFO L82 PathProgramCache]: Analyzing trace with hash 594987225, now seen corresponding path program 78 times [2021-06-06 00:05:01,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:01,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693111716] [2021-06-06 00:05:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:01,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:01,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693111716] [2021-06-06 00:05:01,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693111716] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:01,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272427666] [2021-06-06 00:05:01,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:01,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:05:01,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:01,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:01,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:01,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272427666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:01,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:01,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:05:01,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139089678] [2021-06-06 00:05:01,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:01,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:01,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:01,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:01,286 INFO L87 Difference]: Start difference. First operand 2991 states and 10502 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:02,078 INFO L93 Difference]: Finished difference Result 6061 states and 19474 transitions. [2021-06-06 00:05:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:05:02,079 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:02,087 INFO L225 Difference]: With dead ends: 6061 [2021-06-06 00:05:02,087 INFO L226 Difference]: Without dead ends: 6061 [2021-06-06 00:05:02,087 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 492.1ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:05:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-06 00:05:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 3003. [2021-06-06 00:05:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 3.5109926715522985) internal successors, (10540), 3002 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 10540 transitions. [2021-06-06 00:05:02,143 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 10540 transitions. Word has length 28 [2021-06-06 00:05:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:02,143 INFO L482 AbstractCegarLoop]: Abstraction has 3003 states and 10540 transitions. [2021-06-06 00:05:02,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 10540 transitions. [2021-06-06 00:05:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:02,147 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:02,147 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:02,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4040 [2021-06-06 00:05:02,347 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:02,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2046619895, now seen corresponding path program 79 times [2021-06-06 00:05:02,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:02,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437822583] [2021-06-06 00:05:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:02,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:02,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437822583] [2021-06-06 00:05:02,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437822583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:02,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037680328] [2021-06-06 00:05:02,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:02,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:02,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:02,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037680328] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:02,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:02,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:05:02,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133815935] [2021-06-06 00:05:02,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:02,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:02,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:02,505 INFO L87 Difference]: Start difference. First operand 3003 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:03,579 INFO L93 Difference]: Finished difference Result 6857 states and 21507 transitions. [2021-06-06 00:05:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:05:03,579 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:03,589 INFO L225 Difference]: With dead ends: 6857 [2021-06-06 00:05:03,589 INFO L226 Difference]: Without dead ends: 6857 [2021-06-06 00:05:03,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 681.1ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:05:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-06-06 00:05:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 3069. [2021-06-06 00:05:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 3.50619295958279) internal successors, (10757), 3068 states have internal predecessors, (10757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 10757 transitions. [2021-06-06 00:05:03,649 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 10757 transitions. Word has length 28 [2021-06-06 00:05:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:03,649 INFO L482 AbstractCegarLoop]: Abstraction has 3069 states and 10757 transitions. [2021-06-06 00:05:03,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 10757 transitions. [2021-06-06 00:05:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:03,653 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:03,653 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:03,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4041,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:03,868 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:03,868 INFO L82 PathProgramCache]: Analyzing trace with hash -403580741, now seen corresponding path program 80 times [2021-06-06 00:05:03,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:03,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589219668] [2021-06-06 00:05:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:03,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:03,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589219668] [2021-06-06 00:05:03,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589219668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:03,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127619000] [2021-06-06 00:05:03,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:03,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:03,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:03,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:03,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:04,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127619000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:04,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:04,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:05:04,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143072421] [2021-06-06 00:05:04,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:04,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:04,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:04,032 INFO L87 Difference]: Start difference. First operand 3069 states and 10757 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:05,077 INFO L93 Difference]: Finished difference Result 6397 states and 20307 transitions. [2021-06-06 00:05:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:05:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:05,087 INFO L225 Difference]: With dead ends: 6397 [2021-06-06 00:05:05,087 INFO L226 Difference]: Without dead ends: 6393 [2021-06-06 00:05:05,087 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 615.5ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:05:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2021-06-06 00:05:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 2995. [2021-06-06 00:05:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2994 states have (on average 3.502672010688043) internal successors, (10487), 2994 states have internal predecessors, (10487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 10487 transitions. [2021-06-06 00:05:05,158 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 10487 transitions. Word has length 28 [2021-06-06 00:05:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:05,159 INFO L482 AbstractCegarLoop]: Abstraction has 2995 states and 10487 transitions. [2021-06-06 00:05:05,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 10487 transitions. [2021-06-06 00:05:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:05,162 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:05,162 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:05,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4042 [2021-06-06 00:05:05,363 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 175862483, now seen corresponding path program 65 times [2021-06-06 00:05:05,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:05,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962898] [2021-06-06 00:05:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:05,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:05,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962898] [2021-06-06 00:05:05,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:05,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857885153] [2021-06-06 00:05:05,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:05,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:05:05,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:05,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:05,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:05,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857885153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:05,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:05,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:05:05,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926506798] [2021-06-06 00:05:05,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:05,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:05,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:05,510 INFO L87 Difference]: Start difference. First operand 2995 states and 10487 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:06,079 INFO L93 Difference]: Finished difference Result 5524 states and 17848 transitions. [2021-06-06 00:05:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:05:06,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:06,088 INFO L225 Difference]: With dead ends: 5524 [2021-06-06 00:05:06,088 INFO L226 Difference]: Without dead ends: 5524 [2021-06-06 00:05:06,089 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 334.8ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:05:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2021-06-06 00:05:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 2995. [2021-06-06 00:05:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2994 states have (on average 3.5046760187040746) internal successors, (10493), 2994 states have internal predecessors, (10493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 10493 transitions. [2021-06-06 00:05:06,146 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 10493 transitions. Word has length 28 [2021-06-06 00:05:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:06,147 INFO L482 AbstractCegarLoop]: Abstraction has 2995 states and 10493 transitions. [2021-06-06 00:05:06,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 10493 transitions. [2021-06-06 00:05:06,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:06,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:06,151 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:06,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4043 [2021-06-06 00:05:06,366 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1435937279, now seen corresponding path program 66 times [2021-06-06 00:05:06,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:06,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100697660] [2021-06-06 00:05:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:06,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:06,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100697660] [2021-06-06 00:05:06,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100697660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:06,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955087048] [2021-06-06 00:05:06,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:06,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:05:06,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:06,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:06,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:06,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955087048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:06,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:06,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:05:06,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383130967] [2021-06-06 00:05:06,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:06,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:06,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:06,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:06,530 INFO L87 Difference]: Start difference. First operand 2995 states and 10493 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:07,408 INFO L93 Difference]: Finished difference Result 5876 states and 18839 transitions. [2021-06-06 00:05:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:05:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:07,417 INFO L225 Difference]: With dead ends: 5876 [2021-06-06 00:05:07,418 INFO L226 Difference]: Without dead ends: 5876 [2021-06-06 00:05:07,418 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 515.9ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:05:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2021-06-06 00:05:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 2986. [2021-06-06 00:05:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 3.504857621440536) internal successors, (10462), 2985 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 10462 transitions. [2021-06-06 00:05:07,484 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 10462 transitions. Word has length 28 [2021-06-06 00:05:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:07,485 INFO L482 AbstractCegarLoop]: Abstraction has 2986 states and 10462 transitions. [2021-06-06 00:05:07,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 10462 transitions. [2021-06-06 00:05:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:07,488 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:07,488 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:07,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4044 [2021-06-06 00:05:07,704 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1667476927, now seen corresponding path program 67 times [2021-06-06 00:05:07,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:07,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543268875] [2021-06-06 00:05:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:07,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:07,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543268875] [2021-06-06 00:05:07,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543268875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:07,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382321688] [2021-06-06 00:05:07,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:07,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:07,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:07,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382321688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:07,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:07,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:05:07,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746118583] [2021-06-06 00:05:07,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:07,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:07,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:07,879 INFO L87 Difference]: Start difference. First operand 2986 states and 10462 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:08,787 INFO L93 Difference]: Finished difference Result 6350 states and 20120 transitions. [2021-06-06 00:05:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:05:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:08,797 INFO L225 Difference]: With dead ends: 6350 [2021-06-06 00:05:08,798 INFO L226 Difference]: Without dead ends: 6350 [2021-06-06 00:05:08,798 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 543.5ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:05:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-06-06 00:05:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 3046. [2021-06-06 00:05:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 3.5008210180623975) internal successors, (10660), 3045 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 10660 transitions. [2021-06-06 00:05:08,861 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 10660 transitions. Word has length 28 [2021-06-06 00:05:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:08,861 INFO L482 AbstractCegarLoop]: Abstraction has 3046 states and 10660 transitions. [2021-06-06 00:05:08,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 10660 transitions. [2021-06-06 00:05:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:08,896 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:08,896 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:09,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4045 [2021-06-06 00:05:09,097 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:09,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1647761113, now seen corresponding path program 68 times [2021-06-06 00:05:09,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:09,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390053785] [2021-06-06 00:05:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:09,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:09,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390053785] [2021-06-06 00:05:09,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390053785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:09,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020600798] [2021-06-06 00:05:09,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:09,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:09,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:09,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:09,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020600798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:09,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:09,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-06 00:05:09,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712589439] [2021-06-06 00:05:09,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:09,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:09,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:09,246 INFO L87 Difference]: Start difference. First operand 3046 states and 10660 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:09,805 INFO L93 Difference]: Finished difference Result 7170 states and 24220 transitions. [2021-06-06 00:05:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:05:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:09,815 INFO L225 Difference]: With dead ends: 7170 [2021-06-06 00:05:09,815 INFO L226 Difference]: Without dead ends: 7170 [2021-06-06 00:05:09,815 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 372.8ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:05:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2021-06-06 00:05:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 4145. [2021-06-06 00:05:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.618484555984556) internal successors, (14995), 4144 states have internal predecessors, (14995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14995 transitions. [2021-06-06 00:05:09,888 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14995 transitions. Word has length 28 [2021-06-06 00:05:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:09,888 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 14995 transitions. [2021-06-06 00:05:09,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14995 transitions. [2021-06-06 00:05:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:09,893 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:09,893 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:10,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4046 [2021-06-06 00:05:10,093 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:10,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1712298069, now seen corresponding path program 69 times [2021-06-06 00:05:10,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:10,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075251850] [2021-06-06 00:05:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:10,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:10,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075251850] [2021-06-06 00:05:10,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075251850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:10,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209074443] [2021-06-06 00:05:10,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:10,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:05:10,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:10,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:10,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:10,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209074443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:10,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:10,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:05:10,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350400351] [2021-06-06 00:05:10,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:10,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:10,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:10,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:10,228 INFO L87 Difference]: Start difference. First operand 4145 states and 14995 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:10,987 INFO L93 Difference]: Finished difference Result 7513 states and 25430 transitions. [2021-06-06 00:05:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:05:10,988 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:10,998 INFO L225 Difference]: With dead ends: 7513 [2021-06-06 00:05:10,998 INFO L226 Difference]: Without dead ends: 7509 [2021-06-06 00:05:10,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 429.1ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:05:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2021-06-06 00:05:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 4037. [2021-06-06 00:05:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4037 states, 4036 states have (on average 3.627601585728444) internal successors, (14641), 4036 states have internal predecessors, (14641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 14641 transitions. [2021-06-06 00:05:11,073 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 14641 transitions. Word has length 28 [2021-06-06 00:05:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:11,073 INFO L482 AbstractCegarLoop]: Abstraction has 4037 states and 14641 transitions. [2021-06-06 00:05:11,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 14641 transitions. [2021-06-06 00:05:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:11,078 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:11,078 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:11,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4047,150 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:11,279 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:11,279 INFO L82 PathProgramCache]: Analyzing trace with hash 307959399, now seen corresponding path program 81 times [2021-06-06 00:05:11,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:11,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21073790] [2021-06-06 00:05:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:11,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:11,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21073790] [2021-06-06 00:05:11,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21073790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:11,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638150480] [2021-06-06 00:05:11,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:11,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:05:11,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:11,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:11,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:11,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638150480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:11,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:11,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:05:11,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987746092] [2021-06-06 00:05:11,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:11,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:11,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:11,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:11,417 INFO L87 Difference]: Start difference. First operand 4037 states and 14641 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:12,293 INFO L93 Difference]: Finished difference Result 8340 states and 27997 transitions. [2021-06-06 00:05:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:05:12,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:12,307 INFO L225 Difference]: With dead ends: 8340 [2021-06-06 00:05:12,307 INFO L226 Difference]: Without dead ends: 8331 [2021-06-06 00:05:12,307 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 502.3ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:05:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2021-06-06 00:05:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 4477. [2021-06-06 00:05:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 3.7155942806076854) internal successors, (16631), 4476 states have internal predecessors, (16631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 16631 transitions. [2021-06-06 00:05:12,403 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 16631 transitions. Word has length 28 [2021-06-06 00:05:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:12,403 INFO L482 AbstractCegarLoop]: Abstraction has 4477 states and 16631 transitions. [2021-06-06 00:05:12,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 16631 transitions. [2021-06-06 00:05:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:12,434 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:12,434 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:12,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4048,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:12,634 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:12,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1945666497, now seen corresponding path program 82 times [2021-06-06 00:05:12,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:12,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39505183] [2021-06-06 00:05:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:12,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:12,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39505183] [2021-06-06 00:05:12,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39505183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:12,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058200969] [2021-06-06 00:05:12,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:12,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:12,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:12,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:12,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:12,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058200969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:12,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:12,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:05:12,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213815007] [2021-06-06 00:05:12,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:12,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:12,766 INFO L87 Difference]: Start difference. First operand 4477 states and 16631 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:13,618 INFO L93 Difference]: Finished difference Result 8630 states and 28901 transitions. [2021-06-06 00:05:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:05:13,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:13,633 INFO L225 Difference]: With dead ends: 8630 [2021-06-06 00:05:13,633 INFO L226 Difference]: Without dead ends: 8630 [2021-06-06 00:05:13,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 510.8ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:05:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2021-06-06 00:05:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 4491. [2021-06-06 00:05:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 3.7028953229398662) internal successors, (16626), 4490 states have internal predecessors, (16626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 16626 transitions. [2021-06-06 00:05:13,737 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 16626 transitions. Word has length 28 [2021-06-06 00:05:13,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:13,737 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 16626 transitions. [2021-06-06 00:05:13,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 16626 transitions. [2021-06-06 00:05:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:13,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:13,743 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:13,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4049,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:13,944 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1145894509, now seen corresponding path program 83 times [2021-06-06 00:05:13,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:13,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400542746] [2021-06-06 00:05:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:13,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:13,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400542746] [2021-06-06 00:05:13,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400542746] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:13,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47572867] [2021-06-06 00:05:13,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:14,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:05:14,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:14,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:14,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:14,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47572867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:14,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:14,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:05:14,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747059213] [2021-06-06 00:05:14,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:14,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:14,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:14,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:14,075 INFO L87 Difference]: Start difference. First operand 4491 states and 16626 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:14,607 INFO L93 Difference]: Finished difference Result 8035 states and 28348 transitions. [2021-06-06 00:05:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:05:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:14,620 INFO L225 Difference]: With dead ends: 8035 [2021-06-06 00:05:14,620 INFO L226 Difference]: Without dead ends: 7938 [2021-06-06 00:05:14,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 288.5ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:05:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2021-06-06 00:05:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 5963. [2021-06-06 00:05:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 5962 states have (on average 3.763837638376384) internal successors, (22440), 5962 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 22440 transitions. [2021-06-06 00:05:14,723 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 22440 transitions. Word has length 28 [2021-06-06 00:05:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:14,723 INFO L482 AbstractCegarLoop]: Abstraction has 5963 states and 22440 transitions. [2021-06-06 00:05:14,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 22440 transitions. [2021-06-06 00:05:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:14,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:14,732 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:14,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4050,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:14,932 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:14,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1941057807, now seen corresponding path program 84 times [2021-06-06 00:05:14,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:14,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708867157] [2021-06-06 00:05:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:14,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:14,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708867157] [2021-06-06 00:05:14,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708867157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:14,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017769982] [2021-06-06 00:05:14,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:14,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:05:14,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:14,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:05:14,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:15,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017769982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:15,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:15,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:05:15,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224536090] [2021-06-06 00:05:15,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:05:15,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:15,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:05:15,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:05:15,048 INFO L87 Difference]: Start difference. First operand 5963 states and 22440 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:15,235 INFO L93 Difference]: Finished difference Result 8287 states and 29195 transitions. [2021-06-06 00:05:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:05:15,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:15,248 INFO L225 Difference]: With dead ends: 8287 [2021-06-06 00:05:15,248 INFO L226 Difference]: Without dead ends: 8287 [2021-06-06 00:05:15,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:05:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2021-06-06 00:05:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 6088. [2021-06-06 00:05:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6087 states have (on average 3.741416132741909) internal successors, (22774), 6087 states have internal predecessors, (22774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 22774 transitions. [2021-06-06 00:05:15,359 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 22774 transitions. Word has length 28 [2021-06-06 00:05:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:15,359 INFO L482 AbstractCegarLoop]: Abstraction has 6088 states and 22774 transitions. [2021-06-06 00:05:15,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 22774 transitions. [2021-06-06 00:05:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:15,368 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:15,368 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:15,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4051,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:15,583 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1010858063, now seen corresponding path program 85 times [2021-06-06 00:05:15,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:15,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754803369] [2021-06-06 00:05:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:15,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:15,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754803369] [2021-06-06 00:05:15,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754803369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:15,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983833621] [2021-06-06 00:05:15,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:15,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:15,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:15,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983833621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:15,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:15,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:05:15,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374542214] [2021-06-06 00:05:15,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:15,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:15,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:15,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:15,745 INFO L87 Difference]: Start difference. First operand 6088 states and 22774 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:16,481 INFO L93 Difference]: Finished difference Result 12628 states and 43945 transitions. [2021-06-06 00:05:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:05:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:16,504 INFO L225 Difference]: With dead ends: 12628 [2021-06-06 00:05:16,504 INFO L226 Difference]: Without dead ends: 12628 [2021-06-06 00:05:16,505 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 455.1ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:05:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12628 states. [2021-06-06 00:05:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12628 to 6761. [2021-06-06 00:05:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6760 states have (on average 3.7547337278106507) internal successors, (25382), 6760 states have internal predecessors, (25382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 25382 transitions. [2021-06-06 00:05:16,660 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 25382 transitions. Word has length 28 [2021-06-06 00:05:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:16,660 INFO L482 AbstractCegarLoop]: Abstraction has 6761 states and 25382 transitions. [2021-06-06 00:05:16,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 25382 transitions. [2021-06-06 00:05:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:16,670 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:16,670 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:16,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4052 [2021-06-06 00:05:16,870 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash 891821389, now seen corresponding path program 86 times [2021-06-06 00:05:16,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:16,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429182617] [2021-06-06 00:05:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:16,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:16,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429182617] [2021-06-06 00:05:16,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429182617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:16,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108768586] [2021-06-06 00:05:16,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:16,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:16,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:16,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:16,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:16,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108768586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:16,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:16,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:05:16,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865359936] [2021-06-06 00:05:16,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:16,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:16,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:16,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:16,988 INFO L87 Difference]: Start difference. First operand 6761 states and 25382 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:17,609 INFO L93 Difference]: Finished difference Result 12791 states and 44537 transitions. [2021-06-06 00:05:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:05:17,610 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:17,633 INFO L225 Difference]: With dead ends: 12791 [2021-06-06 00:05:17,633 INFO L226 Difference]: Without dead ends: 12791 [2021-06-06 00:05:17,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 346.4ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:05:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12791 states. [2021-06-06 00:05:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12791 to 6999. [2021-06-06 00:05:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 3.734352672192055) internal successors, (26133), 6998 states have internal predecessors, (26133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 26133 transitions. [2021-06-06 00:05:17,812 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 26133 transitions. Word has length 28 [2021-06-06 00:05:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:17,812 INFO L482 AbstractCegarLoop]: Abstraction has 6999 states and 26133 transitions. [2021-06-06 00:05:17,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 26133 transitions. [2021-06-06 00:05:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:17,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:17,823 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:18,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4053,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:18,023 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:18,023 INFO L82 PathProgramCache]: Analyzing trace with hash -191201267, now seen corresponding path program 87 times [2021-06-06 00:05:18,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:18,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117110799] [2021-06-06 00:05:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:18,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:18,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117110799] [2021-06-06 00:05:18,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117110799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:18,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227606058] [2021-06-06 00:05:18,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:18,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:05:18,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:18,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 00:05:18,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:18,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227606058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:18,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:18,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-06 00:05:18,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596005901] [2021-06-06 00:05:18,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:18,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:18,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:18,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:18,176 INFO L87 Difference]: Start difference. First operand 6999 states and 26133 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:18,902 INFO L93 Difference]: Finished difference Result 9904 states and 35142 transitions. [2021-06-06 00:05:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:05:18,903 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:18,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:18,919 INFO L225 Difference]: With dead ends: 9904 [2021-06-06 00:05:18,919 INFO L226 Difference]: Without dead ends: 9816 [2021-06-06 00:05:18,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 492.4ms TimeCoverageRelationStatistics Valid=534, Invalid=1916, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:05:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2021-06-06 00:05:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 7496. [2021-06-06 00:05:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 3.741160773849233) internal successors, (28040), 7495 states have internal predecessors, (28040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 28040 transitions. [2021-06-06 00:05:19,089 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 28040 transitions. Word has length 28 [2021-06-06 00:05:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:19,089 INFO L482 AbstractCegarLoop]: Abstraction has 7496 states and 28040 transitions. [2021-06-06 00:05:19,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 28040 transitions. [2021-06-06 00:05:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:19,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:19,100 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:19,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4054 [2021-06-06 00:05:19,300 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1279876851, now seen corresponding path program 88 times [2021-06-06 00:05:19,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:19,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546408029] [2021-06-06 00:05:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:19,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:19,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546408029] [2021-06-06 00:05:19,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546408029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:19,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785433744] [2021-06-06 00:05:19,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:19,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:19,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:19,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:19,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:19,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785433744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:19,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:19,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:05:19,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131758231] [2021-06-06 00:05:19,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:05:19,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:05:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:05:19,416 INFO L87 Difference]: Start difference. First operand 7496 states and 28040 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:19,776 INFO L93 Difference]: Finished difference Result 11192 states and 39947 transitions. [2021-06-06 00:05:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:05:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:19,797 INFO L225 Difference]: With dead ends: 11192 [2021-06-06 00:05:19,797 INFO L226 Difference]: Without dead ends: 11192 [2021-06-06 00:05:19,797 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 197.7ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:05:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11192 states. [2021-06-06 00:05:19,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11192 to 8528. [2021-06-06 00:05:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8528 states, 8527 states have (on average 3.7686173331769672) internal successors, (32135), 8527 states have internal predecessors, (32135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8528 states to 8528 states and 32135 transitions. [2021-06-06 00:05:19,964 INFO L78 Accepts]: Start accepts. Automaton has 8528 states and 32135 transitions. Word has length 28 [2021-06-06 00:05:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:19,964 INFO L482 AbstractCegarLoop]: Abstraction has 8528 states and 32135 transitions. [2021-06-06 00:05:19,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 8528 states and 32135 transitions. [2021-06-06 00:05:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:19,976 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:19,976 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:20,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4055 [2021-06-06 00:05:20,192 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash 847000247, now seen corresponding path program 89 times [2021-06-06 00:05:20,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:20,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867497562] [2021-06-06 00:05:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:20,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:20,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867497562] [2021-06-06 00:05:20,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867497562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:20,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511902992] [2021-06-06 00:05:20,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:20,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:05:20,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:20,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:20,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:20,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511902992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:20,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:20,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:05:20,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730132772] [2021-06-06 00:05:20,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:20,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:20,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:20,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:20,306 INFO L87 Difference]: Start difference. First operand 8528 states and 32135 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:21,045 INFO L93 Difference]: Finished difference Result 14252 states and 50831 transitions. [2021-06-06 00:05:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:05:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:21,074 INFO L225 Difference]: With dead ends: 14252 [2021-06-06 00:05:21,075 INFO L226 Difference]: Without dead ends: 14248 [2021-06-06 00:05:21,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 335.4ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:05:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14248 states. [2021-06-06 00:05:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14248 to 8428. [2021-06-06 00:05:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 3.77251690993236) internal successors, (31791), 8427 states have internal predecessors, (31791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 31791 transitions. [2021-06-06 00:05:21,258 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 31791 transitions. Word has length 28 [2021-06-06 00:05:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:21,258 INFO L482 AbstractCegarLoop]: Abstraction has 8428 states and 31791 transitions. [2021-06-06 00:05:21,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 31791 transitions. [2021-06-06 00:05:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:21,270 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:21,270 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:21,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4056 [2021-06-06 00:05:21,471 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:21,471 INFO L82 PathProgramCache]: Analyzing trace with hash 795274241, now seen corresponding path program 90 times [2021-06-06 00:05:21,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:21,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469804565] [2021-06-06 00:05:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:21,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:21,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469804565] [2021-06-06 00:05:21,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469804565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:21,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800704601] [2021-06-06 00:05:21,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:21,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:05:21,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:21,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:21,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:21,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800704601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:21,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:21,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:05:21,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416579419] [2021-06-06 00:05:21,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:21,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:21,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:21,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:21,593 INFO L87 Difference]: Start difference. First operand 8428 states and 31791 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:22,061 INFO L93 Difference]: Finished difference Result 11465 states and 40959 transitions. [2021-06-06 00:05:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:05:22,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:22,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:22,081 INFO L225 Difference]: With dead ends: 11465 [2021-06-06 00:05:22,081 INFO L226 Difference]: Without dead ends: 11465 [2021-06-06 00:05:22,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 268.3ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:05:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11465 states. [2021-06-06 00:05:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11465 to 8331. [2021-06-06 00:05:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 8330 states have (on average 3.768667466986795) internal successors, (31393), 8330 states have internal predecessors, (31393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 31393 transitions. [2021-06-06 00:05:22,251 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 31393 transitions. Word has length 28 [2021-06-06 00:05:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:22,251 INFO L482 AbstractCegarLoop]: Abstraction has 8331 states and 31393 transitions. [2021-06-06 00:05:22,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 31393 transitions. [2021-06-06 00:05:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:22,264 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:22,265 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:22,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4057 [2021-06-06 00:05:22,481 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:22,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1444336905, now seen corresponding path program 91 times [2021-06-06 00:05:22,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:22,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738539700] [2021-06-06 00:05:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:22,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:22,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738539700] [2021-06-06 00:05:22,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738539700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:22,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645553223] [2021-06-06 00:05:22,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:22,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:22,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:22,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645553223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:22,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:22,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:05:22,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809183032] [2021-06-06 00:05:22,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:22,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:22,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:22,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:22,598 INFO L87 Difference]: Start difference. First operand 8331 states and 31393 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:23,308 INFO L93 Difference]: Finished difference Result 14086 states and 50169 transitions. [2021-06-06 00:05:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:05:23,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:23,331 INFO L225 Difference]: With dead ends: 14086 [2021-06-06 00:05:23,331 INFO L226 Difference]: Without dead ends: 14074 [2021-06-06 00:05:23,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 361.6ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:05:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2021-06-06 00:05:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 8331. [2021-06-06 00:05:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 8330 states have (on average 3.768187274909964) internal successors, (31389), 8330 states have internal predecessors, (31389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 31389 transitions. [2021-06-06 00:05:23,510 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 31389 transitions. Word has length 28 [2021-06-06 00:05:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:23,510 INFO L482 AbstractCegarLoop]: Abstraction has 8331 states and 31389 transitions. [2021-06-06 00:05:23,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 31389 transitions. [2021-06-06 00:05:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:23,522 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:23,522 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:23,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4058,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:23,723 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash -323944011, now seen corresponding path program 92 times [2021-06-06 00:05:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:23,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728632089] [2021-06-06 00:05:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:23,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:23,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728632089] [2021-06-06 00:05:23,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728632089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:23,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681197759] [2021-06-06 00:05:23,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:23,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:23,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:23,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:23,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:23,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681197759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:23,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:23,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:05:23,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092084039] [2021-06-06 00:05:23,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:23,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:23,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:23,852 INFO L87 Difference]: Start difference. First operand 8331 states and 31389 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:24,975 INFO L93 Difference]: Finished difference Result 21250 states and 74521 transitions. [2021-06-06 00:05:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-06 00:05:24,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:25,016 INFO L225 Difference]: With dead ends: 21250 [2021-06-06 00:05:25,016 INFO L226 Difference]: Without dead ends: 21250 [2021-06-06 00:05:25,017 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 687.6ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:05:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21250 states. [2021-06-06 00:05:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21250 to 11363. [2021-06-06 00:05:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11362 states have (on average 3.808924485125858) internal successors, (43277), 11362 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 43277 transitions. [2021-06-06 00:05:25,350 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 43277 transitions. Word has length 28 [2021-06-06 00:05:25,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:25,350 INFO L482 AbstractCegarLoop]: Abstraction has 11363 states and 43277 transitions. [2021-06-06 00:05:25,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 43277 transitions. [2021-06-06 00:05:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:25,367 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:25,367 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:25,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4059,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:25,569 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash -242567923, now seen corresponding path program 93 times [2021-06-06 00:05:25,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:25,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080475997] [2021-06-06 00:05:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:25,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:25,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080475997] [2021-06-06 00:05:25,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080475997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:25,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926940676] [2021-06-06 00:05:25,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:25,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:05:25,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:25,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:25,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:25,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926940676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:25,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:25,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:05:25,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752301972] [2021-06-06 00:05:25,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:25,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:25,703 INFO L87 Difference]: Start difference. First operand 11363 states and 43277 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:26,774 INFO L93 Difference]: Finished difference Result 20481 states and 72514 transitions. [2021-06-06 00:05:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:05:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:26,816 INFO L225 Difference]: With dead ends: 20481 [2021-06-06 00:05:26,817 INFO L226 Difference]: Without dead ends: 20469 [2021-06-06 00:05:26,817 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 619.3ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:05:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20469 states. [2021-06-06 00:05:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20469 to 11177. [2021-06-06 00:05:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11177 states, 11176 states have (on average 3.815139584824624) internal successors, (42638), 11176 states have internal predecessors, (42638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11177 states to 11177 states and 42638 transitions. [2021-06-06 00:05:27,130 INFO L78 Accepts]: Start accepts. Automaton has 11177 states and 42638 transitions. Word has length 28 [2021-06-06 00:05:27,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:27,131 INFO L482 AbstractCegarLoop]: Abstraction has 11177 states and 42638 transitions. [2021-06-06 00:05:27,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:27,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11177 states and 42638 transitions. [2021-06-06 00:05:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:27,147 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:27,147 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:27,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4060,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:27,348 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:27,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:27,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1757659895, now seen corresponding path program 94 times [2021-06-06 00:05:27,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:27,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827281630] [2021-06-06 00:05:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:27,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:27,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827281630] [2021-06-06 00:05:27,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827281630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:27,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390165885] [2021-06-06 00:05:27,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:27,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:27,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:27,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:27,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390165885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:27,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:27,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:05:27,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179990735] [2021-06-06 00:05:27,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:27,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:27,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:27,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:27,478 INFO L87 Difference]: Start difference. First operand 11177 states and 42638 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:28,499 INFO L93 Difference]: Finished difference Result 20316 states and 71936 transitions. [2021-06-06 00:05:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:05:28,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:28,544 INFO L225 Difference]: With dead ends: 20316 [2021-06-06 00:05:28,544 INFO L226 Difference]: Without dead ends: 20280 [2021-06-06 00:05:28,544 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 562.6ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:05:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2021-06-06 00:05:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 11229. [2021-06-06 00:05:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 11228 states have (on average 3.813323833273958) internal successors, (42816), 11228 states have internal predecessors, (42816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 42816 transitions. [2021-06-06 00:05:28,845 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 42816 transitions. Word has length 28 [2021-06-06 00:05:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:28,845 INFO L482 AbstractCegarLoop]: Abstraction has 11229 states and 42816 transitions. [2021-06-06 00:05:28,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 42816 transitions. [2021-06-06 00:05:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:28,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:28,861 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:29,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4061 [2021-06-06 00:05:29,065 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:29,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:29,065 INFO L82 PathProgramCache]: Analyzing trace with hash -160533179, now seen corresponding path program 95 times [2021-06-06 00:05:29,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:29,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946942316] [2021-06-06 00:05:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:29,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:29,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946942316] [2021-06-06 00:05:29,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946942316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:29,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027756383] [2021-06-06 00:05:29,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:29,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:05:29,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:29,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:29,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:29,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027756383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:29,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:29,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:05:29,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457071399] [2021-06-06 00:05:29,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:29,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:29,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:29,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:29,216 INFO L87 Difference]: Start difference. First operand 11229 states and 42816 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:30,616 INFO L93 Difference]: Finished difference Result 20201 states and 71663 transitions. [2021-06-06 00:05:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-06 00:05:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:30,656 INFO L225 Difference]: With dead ends: 20201 [2021-06-06 00:05:30,656 INFO L226 Difference]: Without dead ends: 20201 [2021-06-06 00:05:30,657 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 888.4ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:05:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20201 states. [2021-06-06 00:05:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20201 to 11425. [2021-06-06 00:05:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11425 states, 11424 states have (on average 3.804796918767507) internal successors, (43466), 11424 states have internal predecessors, (43466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11425 states to 11425 states and 43466 transitions. [2021-06-06 00:05:30,930 INFO L78 Accepts]: Start accepts. Automaton has 11425 states and 43466 transitions. Word has length 28 [2021-06-06 00:05:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:30,930 INFO L482 AbstractCegarLoop]: Abstraction has 11425 states and 43466 transitions. [2021-06-06 00:05:30,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 11425 states and 43466 transitions. [2021-06-06 00:05:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:30,946 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:30,946 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:31,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4062 [2021-06-06 00:05:31,147 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:31,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1482505975, now seen corresponding path program 96 times [2021-06-06 00:05:31,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:31,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434007695] [2021-06-06 00:05:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:31,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:31,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434007695] [2021-06-06 00:05:31,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434007695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:31,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537731015] [2021-06-06 00:05:31,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:31,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 00:05:31,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:31,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:31,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537731015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:31,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:31,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:05:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23794931] [2021-06-06 00:05:31,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:31,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:31,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:31,297 INFO L87 Difference]: Start difference. First operand 11425 states and 43466 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:32,590 INFO L93 Difference]: Finished difference Result 19821 states and 70618 transitions. [2021-06-06 00:05:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:05:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:32,626 INFO L225 Difference]: With dead ends: 19821 [2021-06-06 00:05:32,627 INFO L226 Difference]: Without dead ends: 19809 [2021-06-06 00:05:32,627 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 724.2ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:05:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19809 states. [2021-06-06 00:05:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19809 to 11307. [2021-06-06 00:05:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 3.8090394480806653) internal successors, (43065), 11306 states have internal predecessors, (43065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 43065 transitions. [2021-06-06 00:05:32,907 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 43065 transitions. Word has length 28 [2021-06-06 00:05:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:32,907 INFO L482 AbstractCegarLoop]: Abstraction has 11307 states and 43065 transitions. [2021-06-06 00:05:32,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 43065 transitions. [2021-06-06 00:05:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:32,924 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:32,924 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:33,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4063,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:33,124 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:33,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:33,124 INFO L82 PathProgramCache]: Analyzing trace with hash 215048797, now seen corresponding path program 97 times [2021-06-06 00:05:33,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:33,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328185242] [2021-06-06 00:05:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:33,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:33,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328185242] [2021-06-06 00:05:33,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328185242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:33,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184967293] [2021-06-06 00:05:33,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:33,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:33,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:33,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184967293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:33,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:33,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:05:33,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153250935] [2021-06-06 00:05:33,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:33,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:33,262 INFO L87 Difference]: Start difference. First operand 11307 states and 43065 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:34,330 INFO L93 Difference]: Finished difference Result 19061 states and 68534 transitions. [2021-06-06 00:05:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:05:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:34,366 INFO L225 Difference]: With dead ends: 19061 [2021-06-06 00:05:34,366 INFO L226 Difference]: Without dead ends: 19025 [2021-06-06 00:05:34,367 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 581.1ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:05:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19025 states. [2021-06-06 00:05:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19025 to 11331. [2021-06-06 00:05:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11331 states, 11330 states have (on average 3.8080317740511913) internal successors, (43145), 11330 states have internal predecessors, (43145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11331 states to 11331 states and 43145 transitions. [2021-06-06 00:05:34,716 INFO L78 Accepts]: Start accepts. Automaton has 11331 states and 43145 transitions. Word has length 28 [2021-06-06 00:05:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:34,716 INFO L482 AbstractCegarLoop]: Abstraction has 11331 states and 43145 transitions. [2021-06-06 00:05:34,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11331 states and 43145 transitions. [2021-06-06 00:05:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:34,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:34,734 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:34,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4064 [2021-06-06 00:05:34,935 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:34,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:34,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1691162673, now seen corresponding path program 98 times [2021-06-06 00:05:34,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:34,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473318299] [2021-06-06 00:05:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:34,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:34,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473318299] [2021-06-06 00:05:34,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473318299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:34,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610007938] [2021-06-06 00:05:34,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:34,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:34,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:34,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:35,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610007938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:35,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:35,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:05:35,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462837604] [2021-06-06 00:05:35,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:35,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:35,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:35,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:35,102 INFO L87 Difference]: Start difference. First operand 11331 states and 43145 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:36,345 INFO L93 Difference]: Finished difference Result 27696 states and 98852 transitions. [2021-06-06 00:05:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-06 00:05:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:36,405 INFO L225 Difference]: With dead ends: 27696 [2021-06-06 00:05:36,405 INFO L226 Difference]: Without dead ends: 27696 [2021-06-06 00:05:36,406 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 738.4ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-06 00:05:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27696 states. [2021-06-06 00:05:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27696 to 11621. [2021-06-06 00:05:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11621 states, 11620 states have (on average 3.831239242685026) internal successors, (44519), 11620 states have internal predecessors, (44519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11621 states to 11621 states and 44519 transitions. [2021-06-06 00:05:36,810 INFO L78 Accepts]: Start accepts. Automaton has 11621 states and 44519 transitions. Word has length 28 [2021-06-06 00:05:36,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:36,811 INFO L482 AbstractCegarLoop]: Abstraction has 11621 states and 44519 transitions. [2021-06-06 00:05:36,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand 11621 states and 44519 transitions. [2021-06-06 00:05:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:36,828 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:36,828 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:37,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4065,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:37,029 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:37,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2036852543, now seen corresponding path program 99 times [2021-06-06 00:05:37,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:37,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365549895] [2021-06-06 00:05:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:37,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:37,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365549895] [2021-06-06 00:05:37,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365549895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:37,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208638537] [2021-06-06 00:05:37,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:37,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:05:37,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:37,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:37,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208638537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:37,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:37,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:05:37,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381887914] [2021-06-06 00:05:37,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:37,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:37,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:37,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:37,189 INFO L87 Difference]: Start difference. First operand 11621 states and 44519 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:38,401 INFO L93 Difference]: Finished difference Result 27229 states and 97782 transitions. [2021-06-06 00:05:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-06 00:05:38,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:38,452 INFO L225 Difference]: With dead ends: 27229 [2021-06-06 00:05:38,452 INFO L226 Difference]: Without dead ends: 27229 [2021-06-06 00:05:38,453 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 742.9ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:05:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27229 states. [2021-06-06 00:05:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27229 to 11523. [2021-06-06 00:05:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11523 states, 11522 states have (on average 3.819562575941677) internal successors, (44009), 11522 states have internal predecessors, (44009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 44009 transitions. [2021-06-06 00:05:38,911 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 44009 transitions. Word has length 28 [2021-06-06 00:05:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:38,911 INFO L482 AbstractCegarLoop]: Abstraction has 11523 states and 44009 transitions. [2021-06-06 00:05:38,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 44009 transitions. [2021-06-06 00:05:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:38,928 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:38,928 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:39,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-06 00:05:39,129 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 197254951, now seen corresponding path program 100 times [2021-06-06 00:05:39,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:39,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075622478] [2021-06-06 00:05:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:39,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:39,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075622478] [2021-06-06 00:05:39,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075622478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:39,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498377347] [2021-06-06 00:05:39,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:39,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:39,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:39,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:39,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:39,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498377347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:39,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:39,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:05:39,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421614035] [2021-06-06 00:05:39,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:39,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:39,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:39,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:39,284 INFO L87 Difference]: Start difference. First operand 11523 states and 44009 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:40,117 INFO L93 Difference]: Finished difference Result 21512 states and 77611 transitions. [2021-06-06 00:05:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:05:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:40,158 INFO L225 Difference]: With dead ends: 21512 [2021-06-06 00:05:40,158 INFO L226 Difference]: Without dead ends: 21512 [2021-06-06 00:05:40,159 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 455.2ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:05:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21512 states. [2021-06-06 00:05:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21512 to 11532. [2021-06-06 00:05:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11531 states have (on average 3.8185760124880757) internal successors, (44032), 11531 states have internal predecessors, (44032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 44032 transitions. [2021-06-06 00:05:40,432 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 44032 transitions. Word has length 28 [2021-06-06 00:05:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:40,432 INFO L482 AbstractCegarLoop]: Abstraction has 11532 states and 44032 transitions. [2021-06-06 00:05:40,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 44032 transitions. [2021-06-06 00:05:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:40,448 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:40,448 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:40,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-06 00:05:40,649 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash -477466927, now seen corresponding path program 101 times [2021-06-06 00:05:40,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:40,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641149212] [2021-06-06 00:05:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:40,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:40,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641149212] [2021-06-06 00:05:40,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641149212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:40,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701596463] [2021-06-06 00:05:40,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:40,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:05:40,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:40,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:40,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:40,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701596463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:40,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:40,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:05:40,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942072069] [2021-06-06 00:05:40,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:40,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:40,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:40,800 INFO L87 Difference]: Start difference. First operand 11532 states and 44032 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:41,597 INFO L93 Difference]: Finished difference Result 19923 states and 72552 transitions. [2021-06-06 00:05:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:05:41,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:41,635 INFO L225 Difference]: With dead ends: 19923 [2021-06-06 00:05:41,636 INFO L226 Difference]: Without dead ends: 19923 [2021-06-06 00:05:41,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 451.5ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:05:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2021-06-06 00:05:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 11544. [2021-06-06 00:05:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 11543 states have (on average 3.817898293337954) internal successors, (44070), 11543 states have internal predecessors, (44070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 44070 transitions. [2021-06-06 00:05:41,911 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 44070 transitions. Word has length 28 [2021-06-06 00:05:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:41,911 INFO L482 AbstractCegarLoop]: Abstraction has 11544 states and 44070 transitions. [2021-06-06 00:05:41,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 44070 transitions. [2021-06-06 00:05:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:41,927 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:41,927 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:42,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-06 00:05:42,128 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:42,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1175893249, now seen corresponding path program 102 times [2021-06-06 00:05:42,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:42,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419569643] [2021-06-06 00:05:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:42,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:42,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419569643] [2021-06-06 00:05:42,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419569643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:42,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101398063] [2021-06-06 00:05:42,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:42,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:05:42,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:42,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:42,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:42,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101398063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:42,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:42,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:05:42,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408480105] [2021-06-06 00:05:42,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:42,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:42,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:42,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:42,283 INFO L87 Difference]: Start difference. First operand 11544 states and 44070 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:43,332 INFO L93 Difference]: Finished difference Result 20543 states and 74326 transitions. [2021-06-06 00:05:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-06 00:05:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:43,372 INFO L225 Difference]: With dead ends: 20543 [2021-06-06 00:05:43,372 INFO L226 Difference]: Without dead ends: 20543 [2021-06-06 00:05:43,373 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 657.5ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-06 00:05:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20543 states. [2021-06-06 00:05:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20543 to 11652. [2021-06-06 00:05:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11652 states, 11651 states have (on average 3.8111750064372156) internal successors, (44404), 11651 states have internal predecessors, (44404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11652 states to 11652 states and 44404 transitions. [2021-06-06 00:05:43,737 INFO L78 Accepts]: Start accepts. Automaton has 11652 states and 44404 transitions. Word has length 28 [2021-06-06 00:05:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:43,737 INFO L482 AbstractCegarLoop]: Abstraction has 11652 states and 44404 transitions. [2021-06-06 00:05:43,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11652 states and 44404 transitions. [2021-06-06 00:05:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:43,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:43,754 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:43,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:43,955 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1476034893, now seen corresponding path program 103 times [2021-06-06 00:05:43,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:43,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682771693] [2021-06-06 00:05:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:43,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:43,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682771693] [2021-06-06 00:05:43,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682771693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:43,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206079457] [2021-06-06 00:05:43,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:44,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:44,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:44,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206079457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:44,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:44,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:05:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814376545] [2021-06-06 00:05:44,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:44,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:44,112 INFO L87 Difference]: Start difference. First operand 11652 states and 44404 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:45,102 INFO L93 Difference]: Finished difference Result 20102 states and 73128 transitions. [2021-06-06 00:05:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:05:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:45,139 INFO L225 Difference]: With dead ends: 20102 [2021-06-06 00:05:45,139 INFO L226 Difference]: Without dead ends: 20098 [2021-06-06 00:05:45,140 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 592.2ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:05:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20098 states. [2021-06-06 00:05:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20098 to 11578. [2021-06-06 00:05:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 3.814891595404682) internal successors, (44165), 11577 states have internal predecessors, (44165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 44165 transitions. [2021-06-06 00:05:45,399 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 44165 transitions. Word has length 28 [2021-06-06 00:05:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:45,399 INFO L482 AbstractCegarLoop]: Abstraction has 11578 states and 44165 transitions. [2021-06-06 00:05:45,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 44165 transitions. [2021-06-06 00:05:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:45,415 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:45,415 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:45,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4070,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:45,616 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:45,616 INFO L82 PathProgramCache]: Analyzing trace with hash 729404223, now seen corresponding path program 104 times [2021-06-06 00:05:45,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:45,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637998812] [2021-06-06 00:05:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:45,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:45,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637998812] [2021-06-06 00:05:45,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637998812] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:45,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262273675] [2021-06-06 00:05:45,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:45,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:45,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:45,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:45,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:45,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262273675] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:45,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:45,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:05:45,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453186040] [2021-06-06 00:05:45,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:45,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:45,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:45,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:45,779 INFO L87 Difference]: Start difference. First operand 11578 states and 44165 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:46,912 INFO L93 Difference]: Finished difference Result 19515 states and 70543 transitions. [2021-06-06 00:05:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:05:46,912 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:46,949 INFO L225 Difference]: With dead ends: 19515 [2021-06-06 00:05:46,949 INFO L226 Difference]: Without dead ends: 19515 [2021-06-06 00:05:46,949 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 696.6ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:05:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19515 states. [2021-06-06 00:05:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19515 to 11805. [2021-06-06 00:05:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11805 states, 11804 states have (on average 3.8176042019654353) internal successors, (45063), 11804 states have internal predecessors, (45063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 45063 transitions. [2021-06-06 00:05:47,212 INFO L78 Accepts]: Start accepts. Automaton has 11805 states and 45063 transitions. Word has length 28 [2021-06-06 00:05:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:47,212 INFO L482 AbstractCegarLoop]: Abstraction has 11805 states and 45063 transitions. [2021-06-06 00:05:47,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states and 45063 transitions. [2021-06-06 00:05:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:47,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:47,230 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:47,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4071,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:47,430 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:47,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1909723903, now seen corresponding path program 105 times [2021-06-06 00:05:47,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:47,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413217137] [2021-06-06 00:05:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:47,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:47,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413217137] [2021-06-06 00:05:47,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413217137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:47,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029812411] [2021-06-06 00:05:47,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:47,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:05:47,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:47,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:47,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:47,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029812411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:47,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:47,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:05:47,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255952868] [2021-06-06 00:05:47,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:05:47,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:47,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:05:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:05:47,574 INFO L87 Difference]: Start difference. First operand 11805 states and 45063 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:48,486 INFO L93 Difference]: Finished difference Result 19219 states and 69718 transitions. [2021-06-06 00:05:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:05:48,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:48,524 INFO L225 Difference]: With dead ends: 19219 [2021-06-06 00:05:48,524 INFO L226 Difference]: Without dead ends: 19207 [2021-06-06 00:05:48,525 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 546.4ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:05:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2021-06-06 00:05:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 11907. [2021-06-06 00:05:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11907 states, 11906 states have (on average 3.81202754913489) internal successors, (45386), 11906 states have internal predecessors, (45386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11907 states to 11907 states and 45386 transitions. [2021-06-06 00:05:48,808 INFO L78 Accepts]: Start accepts. Automaton has 11907 states and 45386 transitions. Word has length 28 [2021-06-06 00:05:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:48,809 INFO L482 AbstractCegarLoop]: Abstraction has 11907 states and 45386 transitions. [2021-06-06 00:05:48,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 11907 states and 45386 transitions. [2021-06-06 00:05:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:48,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:48,826 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:49,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-06 00:05:49,027 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:49,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1714650925, now seen corresponding path program 70 times [2021-06-06 00:05:49,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:49,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544690188] [2021-06-06 00:05:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:49,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:49,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544690188] [2021-06-06 00:05:49,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544690188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:49,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812373316] [2021-06-06 00:05:49,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:49,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:49,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:49,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:49,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:49,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812373316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:49,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:49,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:05:49,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799032232] [2021-06-06 00:05:49,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:49,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:49,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:49,154 INFO L87 Difference]: Start difference. First operand 11907 states and 45386 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:49,587 INFO L93 Difference]: Finished difference Result 16719 states and 62078 transitions. [2021-06-06 00:05:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:05:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:49,674 INFO L225 Difference]: With dead ends: 16719 [2021-06-06 00:05:49,675 INFO L226 Difference]: Without dead ends: 16719 [2021-06-06 00:05:49,675 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 240.5ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:05:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2021-06-06 00:05:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 11979. [2021-06-06 00:05:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11979 states, 11978 states have (on average 3.8078143262648187) internal successors, (45610), 11978 states have internal predecessors, (45610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11979 states to 11979 states and 45610 transitions. [2021-06-06 00:05:49,894 INFO L78 Accepts]: Start accepts. Automaton has 11979 states and 45610 transitions. Word has length 28 [2021-06-06 00:05:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:49,894 INFO L482 AbstractCegarLoop]: Abstraction has 11979 states and 45610 transitions. [2021-06-06 00:05:49,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 11979 states and 45610 transitions. [2021-06-06 00:05:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:49,911 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:49,911 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:50,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4073 [2021-06-06 00:05:50,112 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash -55855667, now seen corresponding path program 71 times [2021-06-06 00:05:50,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:50,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928889036] [2021-06-06 00:05:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:50,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:50,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928889036] [2021-06-06 00:05:50,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928889036] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:50,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522901977] [2021-06-06 00:05:50,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:50,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:05:50,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:50,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:50,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:50,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522901977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:50,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:50,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:05:50,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850941706] [2021-06-06 00:05:50,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:50,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:50,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:50,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:50,227 INFO L87 Difference]: Start difference. First operand 11979 states and 45610 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:50,718 INFO L93 Difference]: Finished difference Result 17700 states and 64924 transitions. [2021-06-06 00:05:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:05:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:50,752 INFO L225 Difference]: With dead ends: 17700 [2021-06-06 00:05:50,752 INFO L226 Difference]: Without dead ends: 17700 [2021-06-06 00:05:50,752 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 275.7ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:05:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17700 states. [2021-06-06 00:05:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17700 to 12313. [2021-06-06 00:05:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12313 states, 12312 states have (on average 3.790529564652372) internal successors, (46669), 12312 states have internal predecessors, (46669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12313 states to 12313 states and 46669 transitions. [2021-06-06 00:05:51,025 INFO L78 Accepts]: Start accepts. Automaton has 12313 states and 46669 transitions. Word has length 28 [2021-06-06 00:05:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:51,025 INFO L482 AbstractCegarLoop]: Abstraction has 12313 states and 46669 transitions. [2021-06-06 00:05:51,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12313 states and 46669 transitions. [2021-06-06 00:05:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:51,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:51,043 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:51,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4074 [2021-06-06 00:05:51,243 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:51,243 INFO L82 PathProgramCache]: Analyzing trace with hash -100676809, now seen corresponding path program 72 times [2021-06-06 00:05:51,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:51,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846080515] [2021-06-06 00:05:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:51,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:51,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846080515] [2021-06-06 00:05:51,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846080515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:51,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104431831] [2021-06-06 00:05:51,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:51,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 00:05:51,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:51,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:51,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:51,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104431831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:51,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:51,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:05:51,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101353696] [2021-06-06 00:05:51,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:51,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:51,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:51,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:51,360 INFO L87 Difference]: Start difference. First operand 12313 states and 46669 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:51,771 INFO L93 Difference]: Finished difference Result 17190 states and 63587 transitions. [2021-06-06 00:05:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:05:51,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:51,804 INFO L225 Difference]: With dead ends: 17190 [2021-06-06 00:05:51,804 INFO L226 Difference]: Without dead ends: 17182 [2021-06-06 00:05:51,805 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 216.8ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:05:51,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17182 states. [2021-06-06 00:05:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17182 to 12253. [2021-06-06 00:05:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12253 states, 12252 states have (on average 3.7924420502775056) internal successors, (46465), 12252 states have internal predecessors, (46465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 46465 transitions. [2021-06-06 00:05:52,133 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 46465 transitions. Word has length 28 [2021-06-06 00:05:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:52,133 INFO L482 AbstractCegarLoop]: Abstraction has 12253 states and 46465 transitions. [2021-06-06 00:05:52,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 46465 transitions. [2021-06-06 00:05:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:52,151 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:52,151 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:52,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4075 [2021-06-06 00:05:52,351 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash 496659849, now seen corresponding path program 73 times [2021-06-06 00:05:52,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:52,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424336507] [2021-06-06 00:05:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:52,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:52,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424336507] [2021-06-06 00:05:52,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424336507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:52,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595335104] [2021-06-06 00:05:52,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:52,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:52,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:52,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595335104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:52,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:52,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:05:52,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580698490] [2021-06-06 00:05:52,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:52,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:52,490 INFO L87 Difference]: Start difference. First operand 12253 states and 46465 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:52,924 INFO L93 Difference]: Finished difference Result 17090 states and 63299 transitions. [2021-06-06 00:05:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:05:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:52,958 INFO L225 Difference]: With dead ends: 17090 [2021-06-06 00:05:52,958 INFO L226 Difference]: Without dead ends: 17078 [2021-06-06 00:05:52,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 229.4ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:05:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2021-06-06 00:05:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 12219. [2021-06-06 00:05:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 12218 states have (on average 3.7944017024062857) internal successors, (46360), 12218 states have internal predecessors, (46360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 46360 transitions. [2021-06-06 00:05:53,207 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 46360 transitions. Word has length 28 [2021-06-06 00:05:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:53,208 INFO L482 AbstractCegarLoop]: Abstraction has 12219 states and 46360 transitions. [2021-06-06 00:05:53,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 46360 transitions. [2021-06-06 00:05:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:53,225 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:53,225 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:53,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-06 00:05:53,425 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash -158749623, now seen corresponding path program 74 times [2021-06-06 00:05:53,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:53,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428136699] [2021-06-06 00:05:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:53,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:53,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428136699] [2021-06-06 00:05:53,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428136699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:53,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586888378] [2021-06-06 00:05:53,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:53,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:53,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:53,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:53,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:53,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586888378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:53,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:53,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:05:53,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726582904] [2021-06-06 00:05:53,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:53,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:53,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:53,575 INFO L87 Difference]: Start difference. First operand 12219 states and 46360 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:54,461 INFO L93 Difference]: Finished difference Result 23045 states and 82416 transitions. [2021-06-06 00:05:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:05:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:54,505 INFO L225 Difference]: With dead ends: 23045 [2021-06-06 00:05:54,505 INFO L226 Difference]: Without dead ends: 23045 [2021-06-06 00:05:54,506 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 494.0ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:05:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23045 states. [2021-06-06 00:05:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23045 to 12201. [2021-06-06 00:05:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12201 states, 12200 states have (on average 3.7931967213114755) internal successors, (46277), 12200 states have internal predecessors, (46277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 46277 transitions. [2021-06-06 00:05:54,904 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 46277 transitions. Word has length 28 [2021-06-06 00:05:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:54,905 INFO L482 AbstractCegarLoop]: Abstraction has 12201 states and 46277 transitions. [2021-06-06 00:05:54,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 46277 transitions. [2021-06-06 00:05:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:54,923 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:54,923 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:55,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4077 [2021-06-06 00:05:55,124 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash 368022285, now seen corresponding path program 106 times [2021-06-06 00:05:55,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:55,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817089410] [2021-06-06 00:05:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:55,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:55,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817089410] [2021-06-06 00:05:55,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817089410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:55,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562507287] [2021-06-06 00:05:55,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:55,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:55,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:55,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:55,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562507287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:55,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:55,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:05:55,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624119880] [2021-06-06 00:05:55,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:55,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:55,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:55,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:55,271 INFO L87 Difference]: Start difference. First operand 12201 states and 46277 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:55,973 INFO L93 Difference]: Finished difference Result 18822 states and 68098 transitions. [2021-06-06 00:05:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:05:55,973 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:55,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:56,010 INFO L225 Difference]: With dead ends: 18822 [2021-06-06 00:05:56,010 INFO L226 Difference]: Without dead ends: 18806 [2021-06-06 00:05:56,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 381.2ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:05:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18806 states. [2021-06-06 00:05:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18806 to 13509. [2021-06-06 00:05:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13509 states, 13508 states have (on average 3.85475273911756) internal successors, (52070), 13508 states have internal predecessors, (52070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 52070 transitions. [2021-06-06 00:05:56,317 INFO L78 Accepts]: Start accepts. Automaton has 13509 states and 52070 transitions. Word has length 28 [2021-06-06 00:05:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:56,317 INFO L482 AbstractCegarLoop]: Abstraction has 13509 states and 52070 transitions. [2021-06-06 00:05:56,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 13509 states and 52070 transitions. [2021-06-06 00:05:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:56,339 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:56,339 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:56,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-06 00:05:56,540 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1040435067, now seen corresponding path program 107 times [2021-06-06 00:05:56,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:56,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715688788] [2021-06-06 00:05:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:56,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:56,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715688788] [2021-06-06 00:05:56,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715688788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:56,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493898035] [2021-06-06 00:05:56,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:56,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:05:56,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:56,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:56,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:56,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493898035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:56,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:56,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:05:56,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914186023] [2021-06-06 00:05:56,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:56,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:56,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:56,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:56,676 INFO L87 Difference]: Start difference. First operand 13509 states and 52070 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:57,389 INFO L93 Difference]: Finished difference Result 18923 states and 68358 transitions. [2021-06-06 00:05:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:05:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:57,426 INFO L225 Difference]: With dead ends: 18923 [2021-06-06 00:05:57,426 INFO L226 Difference]: Without dead ends: 18917 [2021-06-06 00:05:57,427 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 391.9ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:05:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18917 states. [2021-06-06 00:05:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18917 to 13479. [2021-06-06 00:05:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13479 states, 13478 states have (on average 3.8540584656477224) internal successors, (51945), 13478 states have internal predecessors, (51945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13479 states to 13479 states and 51945 transitions. [2021-06-06 00:05:57,734 INFO L78 Accepts]: Start accepts. Automaton has 13479 states and 51945 transitions. Word has length 28 [2021-06-06 00:05:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:57,734 INFO L482 AbstractCegarLoop]: Abstraction has 13479 states and 51945 transitions. [2021-06-06 00:05:57,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13479 states and 51945 transitions. [2021-06-06 00:05:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:57,756 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:57,756 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:57,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-06 00:05:57,957 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash -774903755, now seen corresponding path program 108 times [2021-06-06 00:05:57,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:57,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863528588] [2021-06-06 00:05:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:57,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:57,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863528588] [2021-06-06 00:05:57,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863528588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:57,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406063426] [2021-06-06 00:05:57,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:58,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:05:58,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:58,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:58,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:58,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406063426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:58,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:58,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:05:58,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067612112] [2021-06-06 00:05:58,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:58,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:58,078 INFO L87 Difference]: Start difference. First operand 13479 states and 51945 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:58,733 INFO L93 Difference]: Finished difference Result 21275 states and 76975 transitions. [2021-06-06 00:05:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:05:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:05:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:58,774 INFO L225 Difference]: With dead ends: 21275 [2021-06-06 00:05:58,774 INFO L226 Difference]: Without dead ends: 21259 [2021-06-06 00:05:58,774 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 346.8ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:05:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21259 states. [2021-06-06 00:05:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21259 to 13567. [2021-06-06 00:05:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 13566 states have (on average 3.861270824119121) internal successors, (52382), 13566 states have internal predecessors, (52382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 52382 transitions. [2021-06-06 00:05:59,081 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 52382 transitions. Word has length 28 [2021-06-06 00:05:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:59,082 INFO L482 AbstractCegarLoop]: Abstraction has 13567 states and 52382 transitions. [2021-06-06 00:05:59,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 52382 transitions. [2021-06-06 00:05:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:59,102 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:59,102 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:05:59,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4080 [2021-06-06 00:05:59,303 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:59,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1457648085, now seen corresponding path program 109 times [2021-06-06 00:05:59,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:59,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984865162] [2021-06-06 00:05:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:59,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:59,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984865162] [2021-06-06 00:05:59,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984865162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:59,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850663436] [2021-06-06 00:05:59,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:59,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:59,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:59,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850663436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:59,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:59,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:05:59,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744829001] [2021-06-06 00:05:59,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:59,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:59,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:59,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:59,425 INFO L87 Difference]: Start difference. First operand 13567 states and 52382 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:00,070 INFO L93 Difference]: Finished difference Result 22620 states and 81208 transitions. [2021-06-06 00:06:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:06:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:00,112 INFO L225 Difference]: With dead ends: 22620 [2021-06-06 00:06:00,112 INFO L226 Difference]: Without dead ends: 22620 [2021-06-06 00:06:00,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 368.1ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:06:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2021-06-06 00:06:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 13595. [2021-06-06 00:06:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13595 states, 13594 states have (on average 3.8592761512431957) internal successors, (52463), 13594 states have internal predecessors, (52463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13595 states to 13595 states and 52463 transitions. [2021-06-06 00:06:00,453 INFO L78 Accepts]: Start accepts. Automaton has 13595 states and 52463 transitions. Word has length 28 [2021-06-06 00:06:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:00,453 INFO L482 AbstractCegarLoop]: Abstraction has 13595 states and 52463 transitions. [2021-06-06 00:06:00,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 13595 states and 52463 transitions. [2021-06-06 00:06:00,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:00,474 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:00,474 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:00,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4081,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:00,674 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:00,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:00,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1381492369, now seen corresponding path program 75 times [2021-06-06 00:06:00,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:00,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362698158] [2021-06-06 00:06:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:00,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:00,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362698158] [2021-06-06 00:06:00,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362698158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:00,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123974254] [2021-06-06 00:06:00,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:00,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:06:00,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:00,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:00,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123974254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:00,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:00,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:06:00,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987217211] [2021-06-06 00:06:00,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:06:00,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:00,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:06:00,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:06:00,801 INFO L87 Difference]: Start difference. First operand 13595 states and 52463 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:01,674 INFO L93 Difference]: Finished difference Result 23180 states and 85433 transitions. [2021-06-06 00:06:01,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:06:01,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:01,789 INFO L225 Difference]: With dead ends: 23180 [2021-06-06 00:06:01,790 INFO L226 Difference]: Without dead ends: 23176 [2021-06-06 00:06:01,790 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 497.5ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:06:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2021-06-06 00:06:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 13849. [2021-06-06 00:06:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13849 states, 13848 states have (on average 3.849364529173888) internal successors, (53306), 13848 states have internal predecessors, (53306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 53306 transitions. [2021-06-06 00:06:02,113 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 53306 transitions. Word has length 28 [2021-06-06 00:06:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:02,113 INFO L482 AbstractCegarLoop]: Abstraction has 13849 states and 53306 transitions. [2021-06-06 00:06:02,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 53306 transitions. [2021-06-06 00:06:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:02,134 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:02,134 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:02,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4082 [2021-06-06 00:06:02,335 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash -516108431, now seen corresponding path program 110 times [2021-06-06 00:06:02,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:02,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84187811] [2021-06-06 00:06:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:02,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:02,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84187811] [2021-06-06 00:06:02,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84187811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:02,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063623600] [2021-06-06 00:06:02,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:02,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:06:02,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:02,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:02,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:02,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063623600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:02,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:02,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:06:02,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321207723] [2021-06-06 00:06:02,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:02,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:02,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:02,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:02,449 INFO L87 Difference]: Start difference. First operand 13849 states and 53306 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:03,059 INFO L93 Difference]: Finished difference Result 20157 states and 74048 transitions. [2021-06-06 00:06:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:06:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:03,099 INFO L225 Difference]: With dead ends: 20157 [2021-06-06 00:06:03,099 INFO L226 Difference]: Without dead ends: 20131 [2021-06-06 00:06:03,099 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 317.1ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:06:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20131 states. [2021-06-06 00:06:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20131 to 13251. [2021-06-06 00:06:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 3.8595471698113206) internal successors, (51139), 13250 states have internal predecessors, (51139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 51139 transitions. [2021-06-06 00:06:03,399 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 51139 transitions. Word has length 28 [2021-06-06 00:06:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:03,399 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 51139 transitions. [2021-06-06 00:06:03,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 51139 transitions. [2021-06-06 00:06:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:03,420 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:03,420 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:03,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4083,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:03,621 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:03,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:03,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1198852761, now seen corresponding path program 111 times [2021-06-06 00:06:03,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:03,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219337923] [2021-06-06 00:06:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:03,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:03,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219337923] [2021-06-06 00:06:03,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219337923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:03,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298434082] [2021-06-06 00:06:03,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:03,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:06:03,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:03,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:03,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:03,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298434082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:03,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:03,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:06:03,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122790732] [2021-06-06 00:06:03,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:03,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:03,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:03,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:03,742 INFO L87 Difference]: Start difference. First operand 13251 states and 51139 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:04,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:04,447 INFO L93 Difference]: Finished difference Result 19214 states and 69517 transitions. [2021-06-06 00:06:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:06:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:04,485 INFO L225 Difference]: With dead ends: 19214 [2021-06-06 00:06:04,485 INFO L226 Difference]: Without dead ends: 19214 [2021-06-06 00:06:04,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 396.4ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:06:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19214 states. [2021-06-06 00:06:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19214 to 13464. [2021-06-06 00:06:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13464 states, 13463 states have (on average 3.854935749832875) internal successors, (51899), 13463 states have internal predecessors, (51899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 51899 transitions. [2021-06-06 00:06:04,829 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 51899 transitions. Word has length 28 [2021-06-06 00:06:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:04,829 INFO L482 AbstractCegarLoop]: Abstraction has 13464 states and 51899 transitions. [2021-06-06 00:06:04,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 51899 transitions. [2021-06-06 00:06:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:04,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:04,849 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:05,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4084,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:05,049 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:05,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:05,050 INFO L82 PathProgramCache]: Analyzing trace with hash -674876415, now seen corresponding path program 112 times [2021-06-06 00:06:05,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:05,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220727880] [2021-06-06 00:06:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:05,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:05,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220727880] [2021-06-06 00:06:05,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220727880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:05,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234844856] [2021-06-06 00:06:05,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:05,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:06:05,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:05,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:05,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:05,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234844856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:05,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:05,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:06:05,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163133425] [2021-06-06 00:06:05,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:05,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:05,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:05,168 INFO L87 Difference]: Start difference. First operand 13464 states and 51899 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:05,796 INFO L93 Difference]: Finished difference Result 20483 states and 74562 transitions. [2021-06-06 00:06:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:06:05,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:05,835 INFO L225 Difference]: With dead ends: 20483 [2021-06-06 00:06:05,835 INFO L226 Difference]: Without dead ends: 20483 [2021-06-06 00:06:05,836 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 336.6ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:06:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20483 states. [2021-06-06 00:06:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20483 to 14177. [2021-06-06 00:06:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14177 states, 14176 states have (on average 3.8409988713318284) internal successors, (54450), 14176 states have internal predecessors, (54450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14177 states to 14177 states and 54450 transitions. [2021-06-06 00:06:06,143 INFO L78 Accepts]: Start accepts. Automaton has 14177 states and 54450 transitions. Word has length 28 [2021-06-06 00:06:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:06,143 INFO L482 AbstractCegarLoop]: Abstraction has 14177 states and 54450 transitions. [2021-06-06 00:06:06,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 14177 states and 54450 transitions. [2021-06-06 00:06:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:06,167 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:06,167 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:06,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4085 [2021-06-06 00:06:06,368 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash 78789957, now seen corresponding path program 113 times [2021-06-06 00:06:06,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:06,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885090914] [2021-06-06 00:06:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:06,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:06,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885090914] [2021-06-06 00:06:06,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885090914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:06,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963273041] [2021-06-06 00:06:06,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:06,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:06:06,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:06,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:06,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963273041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:06,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:06,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:06:06,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104404411] [2021-06-06 00:06:06,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:06:06,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:06,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:06:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:06:06,494 INFO L87 Difference]: Start difference. First operand 14177 states and 54450 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:07,366 INFO L93 Difference]: Finished difference Result 22983 states and 82487 transitions. [2021-06-06 00:06:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:06:07,367 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:07,415 INFO L225 Difference]: With dead ends: 22983 [2021-06-06 00:06:07,415 INFO L226 Difference]: Without dead ends: 22983 [2021-06-06 00:06:07,416 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 461.6ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:06:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22983 states. [2021-06-06 00:06:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22983 to 14420. [2021-06-06 00:06:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14420 states, 14419 states have (on average 3.8541507732852485) internal successors, (55573), 14419 states have internal predecessors, (55573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14420 states to 14420 states and 55573 transitions. [2021-06-06 00:06:07,768 INFO L78 Accepts]: Start accepts. Automaton has 14420 states and 55573 transitions. Word has length 28 [2021-06-06 00:06:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:07,768 INFO L482 AbstractCegarLoop]: Abstraction has 14420 states and 55573 transitions. [2021-06-06 00:06:07,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 14420 states and 55573 transitions. [2021-06-06 00:06:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:07,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:07,791 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:08,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4086,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:08,006 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:08,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1952101299, now seen corresponding path program 76 times [2021-06-06 00:06:08,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:08,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228674930] [2021-06-06 00:06:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:08,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:08,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228674930] [2021-06-06 00:06:08,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228674930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:08,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532663827] [2021-06-06 00:06:08,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:08,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:06:08,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:08,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:08,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532663827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:08,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:08,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:06:08,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870969332] [2021-06-06 00:06:08,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:06:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:08,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:06:08,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:06:08,161 INFO L87 Difference]: Start difference. First operand 14420 states and 55573 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:09,629 INFO L93 Difference]: Finished difference Result 39692 states and 142842 transitions. [2021-06-06 00:06:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:06:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:09,710 INFO L225 Difference]: With dead ends: 39692 [2021-06-06 00:06:09,710 INFO L226 Difference]: Without dead ends: 39692 [2021-06-06 00:06:09,711 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 852.2ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:06:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39692 states. [2021-06-06 00:06:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39692 to 15659. [2021-06-06 00:06:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15659 states, 15658 states have (on average 3.899093115340401) internal successors, (61052), 15658 states have internal predecessors, (61052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15659 states to 15659 states and 61052 transitions. [2021-06-06 00:06:10,236 INFO L78 Accepts]: Start accepts. Automaton has 15659 states and 61052 transitions. Word has length 28 [2021-06-06 00:06:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:10,236 INFO L482 AbstractCegarLoop]: Abstraction has 15659 states and 61052 transitions. [2021-06-06 00:06:10,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15659 states and 61052 transitions. [2021-06-06 00:06:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:10,260 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:10,260 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:10,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4087 [2021-06-06 00:06:10,462 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1385149219, now seen corresponding path program 77 times [2021-06-06 00:06:10,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:10,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522165564] [2021-06-06 00:06:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:10,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:10,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522165564] [2021-06-06 00:06:10,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522165564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:10,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830137183] [2021-06-06 00:06:10,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:10,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:06:10,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:10,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:10,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830137183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:10,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:10,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:06:10,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039763509] [2021-06-06 00:06:10,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:06:10,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:10,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:06:10,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:06:10,621 INFO L87 Difference]: Start difference. First operand 15659 states and 61052 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:12,114 INFO L93 Difference]: Finished difference Result 38708 states and 140253 transitions. [2021-06-06 00:06:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:06:12,114 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:12,204 INFO L225 Difference]: With dead ends: 38708 [2021-06-06 00:06:12,204 INFO L226 Difference]: Without dead ends: 38708 [2021-06-06 00:06:12,204 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 922.6ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:06:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38708 states. [2021-06-06 00:06:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38708 to 15633. [2021-06-06 00:06:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 15632 states have (on average 3.895598771750256) internal successors, (60896), 15632 states have internal predecessors, (60896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 60896 transitions. [2021-06-06 00:06:12,748 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 60896 transitions. Word has length 28 [2021-06-06 00:06:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:12,748 INFO L482 AbstractCegarLoop]: Abstraction has 15633 states and 60896 transitions. [2021-06-06 00:06:12,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 60896 transitions. [2021-06-06 00:06:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:12,771 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:12,771 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:12,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-06 00:06:12,972 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1667375567, now seen corresponding path program 114 times [2021-06-06 00:06:12,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:12,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583220663] [2021-06-06 00:06:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:13,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:13,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583220663] [2021-06-06 00:06:13,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583220663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:13,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344247292] [2021-06-06 00:06:13,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:13,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:06:13,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:13,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:13,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:13,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344247292] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:13,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:13,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:06:13,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180698181] [2021-06-06 00:06:13,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:06:13,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:13,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:06:13,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:06:13,080 INFO L87 Difference]: Start difference. First operand 15633 states and 60896 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:13,338 INFO L93 Difference]: Finished difference Result 24061 states and 92296 transitions. [2021-06-06 00:06:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:06:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:13,392 INFO L225 Difference]: With dead ends: 24061 [2021-06-06 00:06:13,392 INFO L226 Difference]: Without dead ends: 24014 [2021-06-06 00:06:13,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:06:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24014 states. [2021-06-06 00:06:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24014 to 20722. [2021-06-06 00:06:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20722 states, 20721 states have (on average 3.9071473384489166) internal successors, (80960), 20721 states have internal predecessors, (80960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20722 states to 20722 states and 80960 transitions. [2021-06-06 00:06:13,806 INFO L78 Accepts]: Start accepts. Automaton has 20722 states and 80960 transitions. Word has length 28 [2021-06-06 00:06:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:13,806 INFO L482 AbstractCegarLoop]: Abstraction has 20722 states and 80960 transitions. [2021-06-06 00:06:13,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 20722 states and 80960 transitions. [2021-06-06 00:06:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:13,837 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:13,837 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:14,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 192 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-06 00:06:14,038 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:14,038 INFO L82 PathProgramCache]: Analyzing trace with hash 242691175, now seen corresponding path program 115 times [2021-06-06 00:06:14,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:14,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199015617] [2021-06-06 00:06:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:14,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:14,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199015617] [2021-06-06 00:06:14,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199015617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:14,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550722651] [2021-06-06 00:06:14,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:14,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:14,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:14,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550722651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:14,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:14,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:06:14,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128989214] [2021-06-06 00:06:14,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:06:14,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:14,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:06:14,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:06:14,144 INFO L87 Difference]: Start difference. First operand 20722 states and 80960 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:14,378 INFO L93 Difference]: Finished difference Result 23493 states and 89383 transitions. [2021-06-06 00:06:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:06:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:14,430 INFO L225 Difference]: With dead ends: 23493 [2021-06-06 00:06:14,430 INFO L226 Difference]: Without dead ends: 23493 [2021-06-06 00:06:14,431 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:06:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2021-06-06 00:06:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 20225. [2021-06-06 00:06:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20225 states, 20224 states have (on average 3.895767405063291) internal successors, (78788), 20224 states have internal predecessors, (78788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20225 states to 20225 states and 78788 transitions. [2021-06-06 00:06:14,900 INFO L78 Accepts]: Start accepts. Automaton has 20225 states and 78788 transitions. Word has length 28 [2021-06-06 00:06:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:14,900 INFO L482 AbstractCegarLoop]: Abstraction has 20225 states and 78788 transitions. [2021-06-06 00:06:14,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20225 states and 78788 transitions. [2021-06-06 00:06:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:14,931 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:14,931 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:15,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:15,131 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash -708990263, now seen corresponding path program 116 times [2021-06-06 00:06:15,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:15,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120504409] [2021-06-06 00:06:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:15,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:15,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120504409] [2021-06-06 00:06:15,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120504409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:15,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838168238] [2021-06-06 00:06:15,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:15,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:06:15,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:15,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:15,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838168238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:15,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:15,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:06:15,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413245916] [2021-06-06 00:06:15,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:06:15,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:15,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:06:15,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:06:15,271 INFO L87 Difference]: Start difference. First operand 20225 states and 78788 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:16,162 INFO L93 Difference]: Finished difference Result 32091 states and 118994 transitions. [2021-06-06 00:06:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:06:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:16,236 INFO L225 Difference]: With dead ends: 32091 [2021-06-06 00:06:16,236 INFO L226 Difference]: Without dead ends: 32091 [2021-06-06 00:06:16,237 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 464.4ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:06:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32091 states. [2021-06-06 00:06:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32091 to 20291. [2021-06-06 00:06:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20291 states, 20290 states have (on average 3.8938393297190736) internal successors, (79006), 20290 states have internal predecessors, (79006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20291 states to 20291 states and 79006 transitions. [2021-06-06 00:06:16,708 INFO L78 Accepts]: Start accepts. Automaton has 20291 states and 79006 transitions. Word has length 28 [2021-06-06 00:06:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:16,709 INFO L482 AbstractCegarLoop]: Abstraction has 20291 states and 79006 transitions. [2021-06-06 00:06:16,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 20291 states and 79006 transitions. [2021-06-06 00:06:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:16,739 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:16,739 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:16,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4091,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:16,939 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1685309107, now seen corresponding path program 117 times [2021-06-06 00:06:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:16,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932726999] [2021-06-06 00:06:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:16,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:16,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932726999] [2021-06-06 00:06:16,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932726999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:16,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713200230] [2021-06-06 00:06:16,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:16,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:06:16,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:16,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:16,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:17,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713200230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:17,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:17,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:06:17,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546242922] [2021-06-06 00:06:17,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:06:17,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:06:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:06:17,088 INFO L87 Difference]: Start difference. First operand 20291 states and 79006 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:18,677 INFO L93 Difference]: Finished difference Result 40978 states and 150264 transitions. [2021-06-06 00:06:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:06:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:18,780 INFO L225 Difference]: With dead ends: 40978 [2021-06-06 00:06:18,780 INFO L226 Difference]: Without dead ends: 40978 [2021-06-06 00:06:18,781 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 871.6ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-06 00:06:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40978 states. [2021-06-06 00:06:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40978 to 20294. [2021-06-06 00:06:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20294 states, 20293 states have (on average 3.895924703099591) internal successors, (79060), 20293 states have internal predecessors, (79060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20294 states to 20294 states and 79060 transitions. [2021-06-06 00:06:19,397 INFO L78 Accepts]: Start accepts. Automaton has 20294 states and 79060 transitions. Word has length 28 [2021-06-06 00:06:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:19,397 INFO L482 AbstractCegarLoop]: Abstraction has 20294 states and 79060 transitions. [2021-06-06 00:06:19,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 20294 states and 79060 transitions. [2021-06-06 00:06:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:19,429 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:19,429 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:19,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4092 [2021-06-06 00:06:19,629 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1118357027, now seen corresponding path program 118 times [2021-06-06 00:06:19,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:19,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001324102] [2021-06-06 00:06:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:19,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:19,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001324102] [2021-06-06 00:06:19,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001324102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:19,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270091447] [2021-06-06 00:06:19,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:19,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:06:19,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:19,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:19,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:19,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270091447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:19,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:19,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:06:19,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503584581] [2021-06-06 00:06:19,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:06:19,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:19,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:06:19,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:06:19,776 INFO L87 Difference]: Start difference. First operand 20294 states and 79060 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:21,145 INFO L93 Difference]: Finished difference Result 40582 states and 149545 transitions. [2021-06-06 00:06:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:06:21,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:21,237 INFO L225 Difference]: With dead ends: 40582 [2021-06-06 00:06:21,237 INFO L226 Difference]: Without dead ends: 40582 [2021-06-06 00:06:21,238 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 824.1ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-06 00:06:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40582 states. [2021-06-06 00:06:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40582 to 20081. [2021-06-06 00:06:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20081 states, 20080 states have (on average 3.888147410358566) internal successors, (78074), 20080 states have internal predecessors, (78074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 78074 transitions. [2021-06-06 00:06:21,887 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 78074 transitions. Word has length 28 [2021-06-06 00:06:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:21,887 INFO L482 AbstractCegarLoop]: Abstraction has 20081 states and 78074 transitions. [2021-06-06 00:06:21,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 78074 transitions. [2021-06-06 00:06:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:21,917 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:21,917 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:22,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4093,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:22,117 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash -182218355, now seen corresponding path program 119 times [2021-06-06 00:06:22,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:22,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185413011] [2021-06-06 00:06:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:22,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:22,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185413011] [2021-06-06 00:06:22,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185413011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:22,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112936549] [2021-06-06 00:06:22,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:22,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:06:22,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:22,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:06:22,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:06:22,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112936549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:22,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:22,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:06:22,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095180339] [2021-06-06 00:06:22,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:06:22,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:22,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:06:22,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:06:22,221 INFO L87 Difference]: Start difference. First operand 20081 states and 78074 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:22,479 INFO L93 Difference]: Finished difference Result 29766 states and 111237 transitions. [2021-06-06 00:06:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:06:22,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:22,548 INFO L225 Difference]: With dead ends: 29766 [2021-06-06 00:06:22,548 INFO L226 Difference]: Without dead ends: 29749 [2021-06-06 00:06:22,549 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:06:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29749 states. [2021-06-06 00:06:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29749 to 20349. [2021-06-06 00:06:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20349 states, 20348 states have (on average 3.8934047572242974) internal successors, (79223), 20348 states have internal predecessors, (79223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20349 states to 20349 states and 79223 transitions. [2021-06-06 00:06:22,983 INFO L78 Accepts]: Start accepts. Automaton has 20349 states and 79223 transitions. Word has length 28 [2021-06-06 00:06:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:22,983 INFO L482 AbstractCegarLoop]: Abstraction has 20349 states and 79223 transitions. [2021-06-06 00:06:22,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 20349 states and 79223 transitions. [2021-06-06 00:06:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:23,012 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:23,012 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:23,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4094 [2021-06-06 00:06:23,213 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1325144395, now seen corresponding path program 120 times [2021-06-06 00:06:23,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:23,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326684812] [2021-06-06 00:06:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:23,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:23,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326684812] [2021-06-06 00:06:23,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326684812] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:23,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103843451] [2021-06-06 00:06:23,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:23,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:06:23,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:06:23,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:06:23,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103843451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:23,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:23,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:06:23,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026858076] [2021-06-06 00:06:23,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:06:23,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:23,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:06:23,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:06:23,328 INFO L87 Difference]: Start difference. First operand 20349 states and 79223 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:23,597 INFO L93 Difference]: Finished difference Result 31558 states and 116818 transitions. [2021-06-06 00:06:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:06:23,598 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:23,666 INFO L225 Difference]: With dead ends: 31558 [2021-06-06 00:06:23,666 INFO L226 Difference]: Without dead ends: 31558 [2021-06-06 00:06:23,666 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:06:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31558 states. [2021-06-06 00:06:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31558 to 20016. [2021-06-06 00:06:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20016 states, 20015 states have (on average 3.8783912065950537) internal successors, (77626), 20015 states have internal predecessors, (77626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20016 states to 20016 states and 77626 transitions. [2021-06-06 00:06:24,108 INFO L78 Accepts]: Start accepts. Automaton has 20016 states and 77626 transitions. Word has length 28 [2021-06-06 00:06:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:24,108 INFO L482 AbstractCegarLoop]: Abstraction has 20016 states and 77626 transitions. [2021-06-06 00:06:24,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 20016 states and 77626 transitions. [2021-06-06 00:06:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:24,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:24,139 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:24,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4095 [2021-06-06 00:06:24,353 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:24,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1623141335, now seen corresponding path program 121 times [2021-06-06 00:06:24,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:24,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948902235] [2021-06-06 00:06:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:24,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:24,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948902235] [2021-06-06 00:06:24,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948902235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:24,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237472851] [2021-06-06 00:06:24,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:24,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:24,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237472851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:24,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:24,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:06:24,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331058939] [2021-06-06 00:06:24,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:06:24,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:24,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:06:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:06:24,486 INFO L87 Difference]: Start difference. First operand 20016 states and 77626 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:25,456 INFO L93 Difference]: Finished difference Result 29601 states and 110146 transitions. [2021-06-06 00:06:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:06:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:25,524 INFO L225 Difference]: With dead ends: 29601 [2021-06-06 00:06:25,524 INFO L226 Difference]: Without dead ends: 29601 [2021-06-06 00:06:25,524 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 531.2ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:06:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29601 states. [2021-06-06 00:06:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29601 to 20064. [2021-06-06 00:06:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20064 states, 20063 states have (on average 3.8771868613866323) internal successors, (77788), 20063 states have internal predecessors, (77788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20064 states to 20064 states and 77788 transitions. [2021-06-06 00:06:26,035 INFO L78 Accepts]: Start accepts. Automaton has 20064 states and 77788 transitions. Word has length 28 [2021-06-06 00:06:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:26,035 INFO L482 AbstractCegarLoop]: Abstraction has 20064 states and 77788 transitions. [2021-06-06 00:06:26,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 20064 states and 77788 transitions. [2021-06-06 00:06:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:26,063 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:26,064 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:26,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4096,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:26,264 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:26,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1886911867, now seen corresponding path program 122 times [2021-06-06 00:06:26,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:26,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205150997] [2021-06-06 00:06:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:26,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:26,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205150997] [2021-06-06 00:06:26,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205150997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:26,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650894315] [2021-06-06 00:06:26,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:26,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:06:26,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:26,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:26,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650894315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:26,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:26,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:06:26,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264395512] [2021-06-06 00:06:26,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:06:26,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:06:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:06:26,414 INFO L87 Difference]: Start difference. First operand 20064 states and 77788 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:27,365 INFO L93 Difference]: Finished difference Result 31138 states and 114558 transitions. [2021-06-06 00:06:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:06:27,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:27,435 INFO L225 Difference]: With dead ends: 31138 [2021-06-06 00:06:27,435 INFO L226 Difference]: Without dead ends: 31138 [2021-06-06 00:06:27,436 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 522.4ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:06:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31138 states. [2021-06-06 00:06:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31138 to 20620. [2021-06-06 00:06:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 20619 states have (on average 3.855958096900917) internal successors, (79506), 20619 states have internal predecessors, (79506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 79506 transitions. [2021-06-06 00:06:27,934 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 79506 transitions. Word has length 28 [2021-06-06 00:06:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:27,934 INFO L482 AbstractCegarLoop]: Abstraction has 20620 states and 79506 transitions. [2021-06-06 00:06:27,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 79506 transitions. [2021-06-06 00:06:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:27,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:27,965 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:28,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4097 [2021-06-06 00:06:28,165 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1931733009, now seen corresponding path program 123 times [2021-06-06 00:06:28,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:28,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209108148] [2021-06-06 00:06:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:28,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:28,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209108148] [2021-06-06 00:06:28,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209108148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:28,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361270712] [2021-06-06 00:06:28,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:28,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:06:28,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:28,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:28,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:28,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361270712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:28,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:28,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:06:28,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648699680] [2021-06-06 00:06:28,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:06:28,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:06:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:06:28,293 INFO L87 Difference]: Start difference. First operand 20620 states and 79506 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:29,182 INFO L93 Difference]: Finished difference Result 30264 states and 112255 transitions. [2021-06-06 00:06:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:06:29,182 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:29,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:29,248 INFO L225 Difference]: With dead ends: 30264 [2021-06-06 00:06:29,248 INFO L226 Difference]: Without dead ends: 30260 [2021-06-06 00:06:29,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 491.0ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:06:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30260 states. [2021-06-06 00:06:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30260 to 20512. [2021-06-06 00:06:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 3.858612451855102) internal successors, (79144), 20511 states have internal predecessors, (79144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 79144 transitions. [2021-06-06 00:06:29,725 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 79144 transitions. Word has length 28 [2021-06-06 00:06:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:29,725 INFO L482 AbstractCegarLoop]: Abstraction has 20512 states and 79144 transitions. [2021-06-06 00:06:29,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 79144 transitions. [2021-06-06 00:06:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:29,756 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:29,756 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:29,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4098 [2021-06-06 00:06:29,956 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:29,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1066349071, now seen corresponding path program 124 times [2021-06-06 00:06:29,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:29,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183140923] [2021-06-06 00:06:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:29,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:29,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183140923] [2021-06-06 00:06:29,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183140923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:29,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559807167] [2021-06-06 00:06:29,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:30,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:06:30,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:30,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:06:30,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 00:06:30,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559807167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:30,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:30,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:06:30,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569628024] [2021-06-06 00:06:30,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:06:30,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:30,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:06:30,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:06:30,055 INFO L87 Difference]: Start difference. First operand 20512 states and 79144 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:30,273 INFO L93 Difference]: Finished difference Result 25599 states and 95352 transitions. [2021-06-06 00:06:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:06:30,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:30,327 INFO L225 Difference]: With dead ends: 25599 [2021-06-06 00:06:30,327 INFO L226 Difference]: Without dead ends: 25599 [2021-06-06 00:06:30,327 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:06:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25599 states. [2021-06-06 00:06:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25599 to 20822. [2021-06-06 00:06:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20822 states, 20821 states have (on average 3.8498150905335957) internal successors, (80157), 20821 states have internal predecessors, (80157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20822 states to 20822 states and 80157 transitions. [2021-06-06 00:06:30,714 INFO L78 Accepts]: Start accepts. Automaton has 20822 states and 80157 transitions. Word has length 28 [2021-06-06 00:06:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:30,714 INFO L482 AbstractCegarLoop]: Abstraction has 20822 states and 80157 transitions. [2021-06-06 00:06:30,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 20822 states and 80157 transitions. [2021-06-06 00:06:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:30,745 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:30,745 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:30,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4099 [2021-06-06 00:06:30,945 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:30,946 INFO L82 PathProgramCache]: Analyzing trace with hash -136149327, now seen corresponding path program 125 times [2021-06-06 00:06:30,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:30,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661522855] [2021-06-06 00:06:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:30,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:30,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661522855] [2021-06-06 00:06:30,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661522855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:30,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077108477] [2021-06-06 00:06:30,990 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:31,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:06:31,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:31,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:31,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:06:31,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077108477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:31,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:31,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:06:31,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763981484] [2021-06-06 00:06:31,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:31,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:31,079 INFO L87 Difference]: Start difference. First operand 20822 states and 80157 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:31,929 INFO L93 Difference]: Finished difference Result 31377 states and 115045 transitions. [2021-06-06 00:06:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:06:31,929 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:31,997 INFO L225 Difference]: With dead ends: 31377 [2021-06-06 00:06:31,997 INFO L226 Difference]: Without dead ends: 31377 [2021-06-06 00:06:31,997 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 455.6ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:06:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31377 states. [2021-06-06 00:06:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31377 to 22482. [2021-06-06 00:06:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22482 states, 22481 states have (on average 3.8615719941283753) internal successors, (86812), 22481 states have internal predecessors, (86812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 86812 transitions. [2021-06-06 00:06:32,583 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 86812 transitions. Word has length 28 [2021-06-06 00:06:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:32,584 INFO L482 AbstractCegarLoop]: Abstraction has 22482 states and 86812 transitions. [2021-06-06 00:06:32,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 86812 transitions. [2021-06-06 00:06:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:32,618 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:32,618 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:32,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4100 [2021-06-06 00:06:32,818 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1975921655, now seen corresponding path program 126 times [2021-06-06 00:06:32,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:32,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016761431] [2021-06-06 00:06:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:32,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:32,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016761431] [2021-06-06 00:06:32,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016761431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:32,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891738861] [2021-06-06 00:06:32,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:32,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:06:32,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:32,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:32,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:06:32,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891738861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:32,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:32,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:06:32,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850042535] [2021-06-06 00:06:32,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:32,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:32,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:32,936 INFO L87 Difference]: Start difference. First operand 22482 states and 86812 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:33,614 INFO L93 Difference]: Finished difference Result 29625 states and 110530 transitions. [2021-06-06 00:06:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:06:33,615 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:33,687 INFO L225 Difference]: With dead ends: 29625 [2021-06-06 00:06:33,687 INFO L226 Difference]: Without dead ends: 29613 [2021-06-06 00:06:33,687 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 345.6ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:06:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29613 states. [2021-06-06 00:06:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29613 to 22654. [2021-06-06 00:06:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22654 states, 22653 states have (on average 3.8557365470357126) internal successors, (87344), 22653 states have internal predecessors, (87344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22654 states to 22654 states and 87344 transitions. [2021-06-06 00:06:34,210 INFO L78 Accepts]: Start accepts. Automaton has 22654 states and 87344 transitions. Word has length 28 [2021-06-06 00:06:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:34,210 INFO L482 AbstractCegarLoop]: Abstraction has 22654 states and 87344 transitions. [2021-06-06 00:06:34,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 22654 states and 87344 transitions. [2021-06-06 00:06:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:34,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:34,248 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:34,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4101 [2021-06-06 00:06:34,448 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1688262325, now seen corresponding path program 127 times [2021-06-06 00:06:34,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:34,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101034658] [2021-06-06 00:06:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:34,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:34,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101034658] [2021-06-06 00:06:34,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101034658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:34,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798153426] [2021-06-06 00:06:34,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:34,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:06:34,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:34,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798153426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:34,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:34,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:06:34,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954570693] [2021-06-06 00:06:34,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:06:34,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:34,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:06:34,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:06:34,573 INFO L87 Difference]: Start difference. First operand 22654 states and 87344 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:34,821 INFO L93 Difference]: Finished difference Result 26104 states and 98956 transitions. [2021-06-06 00:06:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 00:06:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:34,882 INFO L225 Difference]: With dead ends: 26104 [2021-06-06 00:06:34,882 INFO L226 Difference]: Without dead ends: 26104 [2021-06-06 00:06:34,882 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:06:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26104 states. [2021-06-06 00:06:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26104 to 23491. [2021-06-06 00:06:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23491 states, 23490 states have (on average 3.8498084291187737) internal successors, (90432), 23490 states have internal predecessors, (90432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23491 states to 23491 states and 90432 transitions. [2021-06-06 00:06:35,466 INFO L78 Accepts]: Start accepts. Automaton has 23491 states and 90432 transitions. Word has length 28 [2021-06-06 00:06:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:35,466 INFO L482 AbstractCegarLoop]: Abstraction has 23491 states and 90432 transitions. [2021-06-06 00:06:35,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23491 states and 90432 transitions. [2021-06-06 00:06:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:35,503 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:35,503 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:35,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4102,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:35,703 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:35,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2131923893, now seen corresponding path program 128 times [2021-06-06 00:06:35,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:35,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999817854] [2021-06-06 00:06:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:35,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:35,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999817854] [2021-06-06 00:06:35,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999817854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:35,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315649258] [2021-06-06 00:06:35,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:35,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:06:35,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:35,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:35,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:35,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315649258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:35,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:35,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:06:35,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775779120] [2021-06-06 00:06:35,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:35,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:35,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:35,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:35,869 INFO L87 Difference]: Start difference. First operand 23491 states and 90432 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:36,845 INFO L93 Difference]: Finished difference Result 31312 states and 115741 transitions. [2021-06-06 00:06:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:06:36,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:36,910 INFO L225 Difference]: With dead ends: 31312 [2021-06-06 00:06:36,910 INFO L226 Difference]: Without dead ends: 31312 [2021-06-06 00:06:36,910 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 542.4ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:06:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31312 states. [2021-06-06 00:06:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31312 to 24677. [2021-06-06 00:06:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24677 states, 24676 states have (on average 3.8184875992867564) internal successors, (94225), 24676 states have internal predecessors, (94225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24677 states to 24677 states and 94225 transitions. [2021-06-06 00:06:37,471 INFO L78 Accepts]: Start accepts. Automaton has 24677 states and 94225 transitions. Word has length 28 [2021-06-06 00:06:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:37,471 INFO L482 AbstractCegarLoop]: Abstraction has 24677 states and 94225 transitions. [2021-06-06 00:06:37,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 24677 states and 94225 transitions. [2021-06-06 00:06:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:37,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:37,506 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:37,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4103,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:37,707 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1422950451, now seen corresponding path program 129 times [2021-06-06 00:06:37,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:37,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073405507] [2021-06-06 00:06:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:37,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:37,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073405507] [2021-06-06 00:06:37,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073405507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:37,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828565468] [2021-06-06 00:06:37,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:37,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:06:37,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:37,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828565468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:37,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:37,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:06:37,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922513665] [2021-06-06 00:06:37,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:06:37,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:37,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:06:37,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:06:37,818 INFO L87 Difference]: Start difference. First operand 24677 states and 94225 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:38,381 INFO L93 Difference]: Finished difference Result 30413 states and 113358 transitions. [2021-06-06 00:06:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:06:38,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:38,447 INFO L225 Difference]: With dead ends: 30413 [2021-06-06 00:06:38,447 INFO L226 Difference]: Without dead ends: 30405 [2021-06-06 00:06:38,447 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 278.7ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:06:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30405 states. [2021-06-06 00:06:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30405 to 24499. [2021-06-06 00:06:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24499 states, 24498 states have (on average 3.824557106702588) internal successors, (93694), 24498 states have internal predecessors, (93694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24499 states to 24499 states and 93694 transitions. [2021-06-06 00:06:39,093 INFO L78 Accepts]: Start accepts. Automaton has 24499 states and 93694 transitions. Word has length 28 [2021-06-06 00:06:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:39,093 INFO L482 AbstractCegarLoop]: Abstraction has 24499 states and 93694 transitions. [2021-06-06 00:06:39,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24499 states and 93694 transitions. [2021-06-06 00:06:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:39,131 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:39,131 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:39,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4104 [2021-06-06 00:06:39,332 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash 27046477, now seen corresponding path program 130 times [2021-06-06 00:06:39,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:39,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82113688] [2021-06-06 00:06:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:39,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:39,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82113688] [2021-06-06 00:06:39,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82113688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:39,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301595810] [2021-06-06 00:06:39,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:39,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:06:39,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:39,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:39,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:39,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301595810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:39,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:39,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:06:39,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93296298] [2021-06-06 00:06:39,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:06:39,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:06:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:06:39,457 INFO L87 Difference]: Start difference. First operand 24499 states and 93694 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:40,211 INFO L93 Difference]: Finished difference Result 32257 states and 118986 transitions. [2021-06-06 00:06:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:06:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:40,280 INFO L225 Difference]: With dead ends: 32257 [2021-06-06 00:06:40,281 INFO L226 Difference]: Without dead ends: 32257 [2021-06-06 00:06:40,281 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 396.8ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:06:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32257 states. [2021-06-06 00:06:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32257 to 25533. [2021-06-06 00:06:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 3.8001331662227793) internal successors, (97025), 25532 states have internal predecessors, (97025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 97025 transitions. [2021-06-06 00:06:40,868 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 97025 transitions. Word has length 28 [2021-06-06 00:06:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:40,868 INFO L482 AbstractCegarLoop]: Abstraction has 25533 states and 97025 transitions. [2021-06-06 00:06:40,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 97025 transitions. [2021-06-06 00:06:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:40,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:40,906 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:41,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4105,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:41,106 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:41,106 INFO L82 PathProgramCache]: Analyzing trace with hash 415101939, now seen corresponding path program 131 times [2021-06-06 00:06:41,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:41,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413810038] [2021-06-06 00:06:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:41,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:41,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413810038] [2021-06-06 00:06:41,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413810038] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:41,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521466668] [2021-06-06 00:06:41,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:41,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:06:41,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:41,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:41,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:41,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521466668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:41,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:41,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:06:41,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702765096] [2021-06-06 00:06:41,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:06:41,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:41,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:06:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:06:41,210 INFO L87 Difference]: Start difference. First operand 25533 states and 97025 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:41,553 INFO L93 Difference]: Finished difference Result 32571 states and 122068 transitions. [2021-06-06 00:06:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:06:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:41,630 INFO L225 Difference]: With dead ends: 32571 [2021-06-06 00:06:41,631 INFO L226 Difference]: Without dead ends: 32571 [2021-06-06 00:06:41,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:06:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32571 states. [2021-06-06 00:06:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32571 to 29359. [2021-06-06 00:06:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29359 states, 29358 states have (on average 3.814599087131276) internal successors, (111989), 29358 states have internal predecessors, (111989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 111989 transitions. [2021-06-06 00:06:42,234 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 111989 transitions. Word has length 28 [2021-06-06 00:06:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:42,234 INFO L482 AbstractCegarLoop]: Abstraction has 29359 states and 111989 transitions. [2021-06-06 00:06:42,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 111989 transitions. [2021-06-06 00:06:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:42,280 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:42,280 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:42,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4106 [2021-06-06 00:06:42,480 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:42,481 INFO L82 PathProgramCache]: Analyzing trace with hash -17774665, now seen corresponding path program 132 times [2021-06-06 00:06:42,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:42,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107123173] [2021-06-06 00:06:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:42,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:42,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107123173] [2021-06-06 00:06:42,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107123173] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:42,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085812299] [2021-06-06 00:06:42,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:42,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:06:42,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:42,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:42,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:42,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085812299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:42,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:42,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:06:42,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124115100] [2021-06-06 00:06:42,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:06:42,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:42,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:06:42,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:06:42,595 INFO L87 Difference]: Start difference. First operand 29359 states and 111989 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:43,235 INFO L93 Difference]: Finished difference Result 35770 states and 133277 transitions. [2021-06-06 00:06:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:06:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:43,317 INFO L225 Difference]: With dead ends: 35770 [2021-06-06 00:06:43,317 INFO L226 Difference]: Without dead ends: 35762 [2021-06-06 00:06:43,317 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 251.5ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:06:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35762 states. [2021-06-06 00:06:43,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35762 to 29325. [2021-06-06 00:06:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29325 states, 29324 states have (on average 3.8150320556540716) internal successors, (111872), 29324 states have internal predecessors, (111872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29325 states to 29325 states and 111872 transitions. [2021-06-06 00:06:43,961 INFO L78 Accepts]: Start accepts. Automaton has 29325 states and 111872 transitions. Word has length 28 [2021-06-06 00:06:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:43,961 INFO L482 AbstractCegarLoop]: Abstraction has 29325 states and 111872 transitions. [2021-06-06 00:06:43,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 29325 states and 111872 transitions. [2021-06-06 00:06:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:44,007 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:44,007 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:44,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4107,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:44,208 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:44,208 INFO L82 PathProgramCache]: Analyzing trace with hash -913595481, now seen corresponding path program 133 times [2021-06-06 00:06:44,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:44,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109049962] [2021-06-06 00:06:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:44,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:44,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109049962] [2021-06-06 00:06:44,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109049962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:44,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014738616] [2021-06-06 00:06:44,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:44,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:44,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:44,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014738616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:44,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:44,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:06:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190554934] [2021-06-06 00:06:44,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:06:44,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:44,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:06:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:06:44,309 INFO L87 Difference]: Start difference. First operand 29325 states and 111872 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:44,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:44,713 INFO L93 Difference]: Finished difference Result 32332 states and 121875 transitions. [2021-06-06 00:06:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:06:44,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:44,784 INFO L225 Difference]: With dead ends: 32332 [2021-06-06 00:06:44,784 INFO L226 Difference]: Without dead ends: 32332 [2021-06-06 00:06:44,784 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 174.5ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:06:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32332 states. [2021-06-06 00:06:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32332 to 29928. [2021-06-06 00:06:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29928 states, 29927 states have (on average 3.812978247067865) internal successors, (114111), 29927 states have internal predecessors, (114111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29928 states to 29928 states and 114111 transitions. [2021-06-06 00:06:45,369 INFO L78 Accepts]: Start accepts. Automaton has 29928 states and 114111 transitions. Word has length 28 [2021-06-06 00:06:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:45,370 INFO L482 AbstractCegarLoop]: Abstraction has 29928 states and 114111 transitions. [2021-06-06 00:06:45,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 29928 states and 114111 transitions. [2021-06-06 00:06:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:45,415 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:45,415 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:45,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4108,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:45,616 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:45,616 INFO L82 PathProgramCache]: Analyzing trace with hash 579561993, now seen corresponding path program 134 times [2021-06-06 00:06:45,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:45,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501859447] [2021-06-06 00:06:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:45,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:45,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501859447] [2021-06-06 00:06:45,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501859447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:45,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337913533] [2021-06-06 00:06:45,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:45,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:06:45,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:45,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:45,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:06:45,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337913533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:45,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:45,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:06:45,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862723376] [2021-06-06 00:06:45,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:06:45,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:45,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:06:45,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:06:45,721 INFO L87 Difference]: Start difference. First operand 29928 states and 114111 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:46,312 INFO L93 Difference]: Finished difference Result 36766 states and 136935 transitions. [2021-06-06 00:06:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:06:46,312 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:46,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:46,397 INFO L225 Difference]: With dead ends: 36766 [2021-06-06 00:06:46,397 INFO L226 Difference]: Without dead ends: 36742 [2021-06-06 00:06:46,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 260.7ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:06:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36742 states. [2021-06-06 00:06:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36742 to 30100. [2021-06-06 00:06:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30100 states, 30099 states have (on average 3.8089305292534634) internal successors, (114645), 30099 states have internal predecessors, (114645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30100 states to 30100 states and 114645 transitions. [2021-06-06 00:06:47,169 INFO L78 Accepts]: Start accepts. Automaton has 30100 states and 114645 transitions. Word has length 28 [2021-06-06 00:06:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:47,169 INFO L482 AbstractCegarLoop]: Abstraction has 30100 states and 114645 transitions. [2021-06-06 00:06:47,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 30100 states and 114645 transitions. [2021-06-06 00:06:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:47,221 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:47,221 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:47,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4109,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:47,421 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1271447701, now seen corresponding path program 135 times [2021-06-06 00:06:47,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:47,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358383172] [2021-06-06 00:06:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:47,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:47,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358383172] [2021-06-06 00:06:47,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358383172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:47,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469358820] [2021-06-06 00:06:47,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:47,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:06:47,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:47,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:06:47,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:47,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469358820] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:47,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:47,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-06 00:06:47,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714983260] [2021-06-06 00:06:47,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:06:47,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:47,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:06:47,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:06:47,548 INFO L87 Difference]: Start difference. First operand 30100 states and 114645 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:47,984 INFO L93 Difference]: Finished difference Result 32808 states and 123611 transitions. [2021-06-06 00:06:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:06:47,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:48,057 INFO L225 Difference]: With dead ends: 32808 [2021-06-06 00:06:48,057 INFO L226 Difference]: Without dead ends: 32808 [2021-06-06 00:06:48,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 211.3ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:06:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2021-06-06 00:06:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 30021. [2021-06-06 00:06:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30021 states, 30020 states have (on average 3.8105929380413057) internal successors, (114394), 30020 states have internal predecessors, (114394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30021 states to 30021 states and 114394 transitions. [2021-06-06 00:06:48,655 INFO L78 Accepts]: Start accepts. Automaton has 30021 states and 114394 transitions. Word has length 28 [2021-06-06 00:06:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:48,655 INFO L482 AbstractCegarLoop]: Abstraction has 30021 states and 114394 transitions. [2021-06-06 00:06:48,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 30021 states and 114394 transitions. [2021-06-06 00:06:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:48,703 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:48,703 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:48,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4110,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:48,904 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash -412931571, now seen corresponding path program 136 times [2021-06-06 00:06:48,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:48,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209843735] [2021-06-06 00:06:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:48,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:48,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209843735] [2021-06-06 00:06:48,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209843735] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:48,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914059925] [2021-06-06 00:06:48,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:48,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:06:48,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:48,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:49,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914059925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:49,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:49,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:06:49,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917176894] [2021-06-06 00:06:49,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:06:49,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:49,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:06:49,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:06:49,017 INFO L87 Difference]: Start difference. First operand 30021 states and 114394 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:49,641 INFO L93 Difference]: Finished difference Result 36684 states and 136681 transitions. [2021-06-06 00:06:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:06:49,641 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:49,724 INFO L225 Difference]: With dead ends: 36684 [2021-06-06 00:06:49,724 INFO L226 Difference]: Without dead ends: 36644 [2021-06-06 00:06:49,725 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 302.7ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:06:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36644 states. [2021-06-06 00:06:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36644 to 30177. [2021-06-06 00:06:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30177 states, 30176 states have (on average 3.806733828207847) internal successors, (114872), 30176 states have internal predecessors, (114872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30177 states to 30177 states and 114872 transitions. [2021-06-06 00:06:50,503 INFO L78 Accepts]: Start accepts. Automaton has 30177 states and 114872 transitions. Word has length 28 [2021-06-06 00:06:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:50,503 INFO L482 AbstractCegarLoop]: Abstraction has 30177 states and 114872 transitions. [2021-06-06 00:06:50,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 30177 states and 114872 transitions. [2021-06-06 00:06:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:50,551 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:50,551 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:50,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4111 [2021-06-06 00:06:50,751 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:50,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1625942477, now seen corresponding path program 137 times [2021-06-06 00:06:50,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:50,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381624136] [2021-06-06 00:06:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:50,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:50,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381624136] [2021-06-06 00:06:50,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381624136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:50,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046352571] [2021-06-06 00:06:50,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:50,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:06:50,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:50,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:50,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:50,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046352571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:50,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:50,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:06:50,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950363026] [2021-06-06 00:06:50,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:06:50,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:50,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:06:50,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:06:50,903 INFO L87 Difference]: Start difference. First operand 30177 states and 114872 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:52,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:52,103 INFO L93 Difference]: Finished difference Result 68717 states and 253109 transitions. [2021-06-06 00:06:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:06:52,104 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:52,291 INFO L225 Difference]: With dead ends: 68717 [2021-06-06 00:06:52,291 INFO L226 Difference]: Without dead ends: 68717 [2021-06-06 00:06:52,292 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 626.8ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:06:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68717 states. [2021-06-06 00:06:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68717 to 37968. [2021-06-06 00:06:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37968 states, 37967 states have (on average 3.8875075723654753) internal successors, (147597), 37967 states have internal predecessors, (147597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37968 states to 37968 states and 147597 transitions. [2021-06-06 00:06:53,527 INFO L78 Accepts]: Start accepts. Automaton has 37968 states and 147597 transitions. Word has length 28 [2021-06-06 00:06:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:53,527 INFO L482 AbstractCegarLoop]: Abstraction has 37968 states and 147597 transitions. [2021-06-06 00:06:53,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 37968 states and 147597 transitions. [2021-06-06 00:06:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:53,584 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:53,584 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:53,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-06 00:06:53,784 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2102072739, now seen corresponding path program 138 times [2021-06-06 00:06:53,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:53,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384174634] [2021-06-06 00:06:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:53,984 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-06-06 00:06:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:54,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:54,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384174634] [2021-06-06 00:06:54,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384174634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:54,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399584982] [2021-06-06 00:06:54,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:54,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:06:54,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:54,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:54,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:54,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399584982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:54,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:54,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:06:54,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308399635] [2021-06-06 00:06:54,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:06:54,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:54,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:06:54,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:06:54,119 INFO L87 Difference]: Start difference. First operand 37968 states and 147597 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:55,304 INFO L93 Difference]: Finished difference Result 68090 states and 251448 transitions. [2021-06-06 00:06:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:06:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:55,487 INFO L225 Difference]: With dead ends: 68090 [2021-06-06 00:06:55,487 INFO L226 Difference]: Without dead ends: 68090 [2021-06-06 00:06:55,488 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 814.1ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:06:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68090 states. [2021-06-06 00:06:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68090 to 37965. [2021-06-06 00:06:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37965 states, 37964 states have (on average 3.8874460014750816) internal successors, (147583), 37964 states have internal predecessors, (147583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37965 states to 37965 states and 147583 transitions. [2021-06-06 00:06:56,691 INFO L78 Accepts]: Start accepts. Automaton has 37965 states and 147583 transitions. Word has length 28 [2021-06-06 00:06:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:56,691 INFO L482 AbstractCegarLoop]: Abstraction has 37965 states and 147583 transitions. [2021-06-06 00:06:56,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 37965 states and 147583 transitions. [2021-06-06 00:06:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:56,748 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:56,748 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:56,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4113,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:56,949 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:56,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1020548699, now seen corresponding path program 139 times [2021-06-06 00:06:56,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:56,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451818541] [2021-06-06 00:06:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:56,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:56,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451818541] [2021-06-06 00:06:56,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451818541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:56,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113734339] [2021-06-06 00:06:56,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:57,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:06:57,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:57,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113734339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:57,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:57,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:06:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276152546] [2021-06-06 00:06:57,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:06:57,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:57,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:06:57,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:06:57,094 INFO L87 Difference]: Start difference. First operand 37965 states and 147583 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:58,347 INFO L93 Difference]: Finished difference Result 63470 states and 235834 transitions. [2021-06-06 00:06:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:06:58,347 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:06:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:58,520 INFO L225 Difference]: With dead ends: 63470 [2021-06-06 00:06:58,520 INFO L226 Difference]: Without dead ends: 63470 [2021-06-06 00:06:58,521 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 674.4ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:06:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63470 states. [2021-06-06 00:06:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63470 to 37989. [2021-06-06 00:06:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37989 states, 37988 states have (on average 3.8877277034853113) internal successors, (147687), 37988 states have internal predecessors, (147687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37989 states to 37989 states and 147687 transitions. [2021-06-06 00:06:59,715 INFO L78 Accepts]: Start accepts. Automaton has 37989 states and 147687 transitions. Word has length 28 [2021-06-06 00:06:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:59,715 INFO L482 AbstractCegarLoop]: Abstraction has 37989 states and 147687 transitions. [2021-06-06 00:06:59,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 37989 states and 147687 transitions. [2021-06-06 00:06:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:06:59,777 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:59,777 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:06:59,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4114,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:59,977 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:59,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1101924787, now seen corresponding path program 140 times [2021-06-06 00:06:59,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:59,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551510271] [2021-06-06 00:06:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:00,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:00,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551510271] [2021-06-06 00:07:00,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551510271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:00,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146179627] [2021-06-06 00:07:00,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:00,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:07:00,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:00,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:00,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:00,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146179627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:00,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:00,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:07:00,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657080547] [2021-06-06 00:07:00,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:07:00,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:07:00,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:07:00,112 INFO L87 Difference]: Start difference. First operand 37989 states and 147687 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:01,248 INFO L93 Difference]: Finished difference Result 62601 states and 233589 transitions. [2021-06-06 00:07:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:07:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:01,401 INFO L225 Difference]: With dead ends: 62601 [2021-06-06 00:07:01,401 INFO L226 Difference]: Without dead ends: 62593 [2021-06-06 00:07:01,401 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 473.6ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:07:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62593 states. [2021-06-06 00:07:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62593 to 37989. [2021-06-06 00:07:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37989 states, 37988 states have (on average 3.8875697588712224) internal successors, (147681), 37988 states have internal predecessors, (147681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37989 states to 37989 states and 147681 transitions. [2021-06-06 00:07:02,493 INFO L78 Accepts]: Start accepts. Automaton has 37989 states and 147681 transitions. Word has length 28 [2021-06-06 00:07:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:02,494 INFO L482 AbstractCegarLoop]: Abstraction has 37989 states and 147681 transitions. [2021-06-06 00:07:02,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 37989 states and 147681 transitions. [2021-06-06 00:07:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:02,550 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:02,550 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:02,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4115,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:02,750 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2032582003, now seen corresponding path program 141 times [2021-06-06 00:07:02,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:02,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479747205] [2021-06-06 00:07:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:02,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:02,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479747205] [2021-06-06 00:07:02,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479747205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:02,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825563138] [2021-06-06 00:07:02,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:02,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:07:02,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:02,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:02,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:02,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825563138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:02,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:02,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:07:02,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158957320] [2021-06-06 00:07:02,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:02,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:02,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:02,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:02,919 INFO L87 Difference]: Start difference. First operand 37989 states and 147681 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:04,024 INFO L93 Difference]: Finished difference Result 62283 states and 232726 transitions. [2021-06-06 00:07:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:07:04,024 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:04,184 INFO L225 Difference]: With dead ends: 62283 [2021-06-06 00:07:04,184 INFO L226 Difference]: Without dead ends: 62283 [2021-06-06 00:07:04,185 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 560.0ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:07:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62283 states. [2021-06-06 00:07:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62283 to 37997. [2021-06-06 00:07:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 37996 states have (on average 3.8876460680071587) internal successors, (147715), 37996 states have internal predecessors, (147715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 147715 transitions. [2021-06-06 00:07:05,690 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 147715 transitions. Word has length 28 [2021-06-06 00:07:05,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:05,690 INFO L482 AbstractCegarLoop]: Abstraction has 37997 states and 147715 transitions. [2021-06-06 00:07:05,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 147715 transitions. [2021-06-06 00:07:05,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:05,752 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:05,752 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:05,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4116 [2021-06-06 00:07:05,953 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:05,953 INFO L82 PathProgramCache]: Analyzing trace with hash -619346139, now seen corresponding path program 142 times [2021-06-06 00:07:05,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:05,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660590541] [2021-06-06 00:07:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:05,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:05,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660590541] [2021-06-06 00:07:05,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660590541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:05,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956567677] [2021-06-06 00:07:05,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:06,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:07:06,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:06,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:06,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:06,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956567677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:06,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:06,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:07:06,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020982936] [2021-06-06 00:07:06,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:06,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:06,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:06,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:06,097 INFO L87 Difference]: Start difference. First operand 37997 states and 147715 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:07,245 INFO L93 Difference]: Finished difference Result 62072 states and 232200 transitions. [2021-06-06 00:07:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:07:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:07,412 INFO L225 Difference]: With dead ends: 62072 [2021-06-06 00:07:07,412 INFO L226 Difference]: Without dead ends: 62064 [2021-06-06 00:07:07,412 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 500.3ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:07:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62064 states. [2021-06-06 00:07:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62064 to 37997. [2021-06-06 00:07:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 37996 states have (on average 3.887593430887462) internal successors, (147713), 37996 states have internal predecessors, (147713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 147713 transitions. [2021-06-06 00:07:08,683 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 147713 transitions. Word has length 28 [2021-06-06 00:07:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:08,683 INFO L482 AbstractCegarLoop]: Abstraction has 37997 states and 147713 transitions. [2021-06-06 00:07:08,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 147713 transitions. [2021-06-06 00:07:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:08,751 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:08,751 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:08,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4117,220 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:08,951 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:08,951 INFO L82 PathProgramCache]: Analyzing trace with hash 384081845, now seen corresponding path program 143 times [2021-06-06 00:07:08,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:08,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428356140] [2021-06-06 00:07:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:08,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:08,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428356140] [2021-06-06 00:07:08,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428356140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:08,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477266591] [2021-06-06 00:07:08,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:09,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:07:09,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:09,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:09,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:09,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477266591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:09,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:09,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:07:09,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399946345] [2021-06-06 00:07:09,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:09,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:09,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:09,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:09,084 INFO L87 Difference]: Start difference. First operand 37997 states and 147713 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:10,357 INFO L93 Difference]: Finished difference Result 61433 states and 228496 transitions. [2021-06-06 00:07:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:07:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:10,511 INFO L225 Difference]: With dead ends: 61433 [2021-06-06 00:07:10,511 INFO L226 Difference]: Without dead ends: 61433 [2021-06-06 00:07:10,511 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 569.0ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:07:10,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61433 states. [2021-06-06 00:07:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61433 to 40835. [2021-06-06 00:07:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40835 states, 40834 states have (on average 3.891022187392859) internal successors, (158886), 40834 states have internal predecessors, (158886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40835 states to 40835 states and 158886 transitions. [2021-06-06 00:07:11,838 INFO L78 Accepts]: Start accepts. Automaton has 40835 states and 158886 transitions. Word has length 28 [2021-06-06 00:07:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:11,838 INFO L482 AbstractCegarLoop]: Abstraction has 40835 states and 158886 transitions. [2021-06-06 00:07:11,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 40835 states and 158886 transitions. [2021-06-06 00:07:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:11,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:11,898 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:12,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4118,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:12,109 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:12,109 INFO L82 PathProgramCache]: Analyzing trace with hash 465457933, now seen corresponding path program 144 times [2021-06-06 00:07:12,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:12,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506209680] [2021-06-06 00:07:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:12,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:12,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506209680] [2021-06-06 00:07:12,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506209680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:12,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260129980] [2021-06-06 00:07:12,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:12,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:07:12,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:12,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:12,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:12,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260129980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:12,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:12,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:07:12,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608273995] [2021-06-06 00:07:12,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:12,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:12,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:12,234 INFO L87 Difference]: Start difference. First operand 40835 states and 158886 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:13,522 INFO L93 Difference]: Finished difference Result 60949 states and 227223 transitions. [2021-06-06 00:07:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:07:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:13,689 INFO L225 Difference]: With dead ends: 60949 [2021-06-06 00:07:13,689 INFO L226 Difference]: Without dead ends: 60941 [2021-06-06 00:07:13,689 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 601.9ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:07:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60941 states. [2021-06-06 00:07:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60941 to 40523. [2021-06-06 00:07:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40523 states, 40522 states have (on average 3.8970929371699325) internal successors, (157918), 40522 states have internal predecessors, (157918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 157918 transitions. [2021-06-06 00:07:14,987 INFO L78 Accepts]: Start accepts. Automaton has 40523 states and 157918 transitions. Word has length 28 [2021-06-06 00:07:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:14,987 INFO L482 AbstractCegarLoop]: Abstraction has 40523 states and 157918 transitions. [2021-06-06 00:07:14,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 40523 states and 157918 transitions. [2021-06-06 00:07:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:15,054 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:15,055 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:15,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4119 [2021-06-06 00:07:15,255 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1049634039, now seen corresponding path program 145 times [2021-06-06 00:07:15,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:15,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190631426] [2021-06-06 00:07:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:15,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:15,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190631426] [2021-06-06 00:07:15,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190631426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:15,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164051371] [2021-06-06 00:07:15,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:15,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:15,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164051371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:15,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:15,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:07:15,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801819476] [2021-06-06 00:07:15,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:15,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:15,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:15,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:15,381 INFO L87 Difference]: Start difference. First operand 40523 states and 157918 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:16,361 INFO L93 Difference]: Finished difference Result 59492 states and 223219 transitions. [2021-06-06 00:07:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:07:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:16,511 INFO L225 Difference]: With dead ends: 59492 [2021-06-06 00:07:16,512 INFO L226 Difference]: Without dead ends: 59468 [2021-06-06 00:07:16,512 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 499.9ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:07:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59468 states. [2021-06-06 00:07:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59468 to 40429. [2021-06-06 00:07:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40429 states, 40428 states have (on average 3.8969278717720393) internal successors, (157545), 40428 states have internal predecessors, (157545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40429 states to 40429 states and 157545 transitions. [2021-06-06 00:07:17,939 INFO L78 Accepts]: Start accepts. Automaton has 40429 states and 157545 transitions. Word has length 28 [2021-06-06 00:07:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:17,939 INFO L482 AbstractCegarLoop]: Abstraction has 40429 states and 157545 transitions. [2021-06-06 00:07:17,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 40429 states and 157545 transitions. [2021-06-06 00:07:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:18,003 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:18,003 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:18,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4120,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:18,203 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:18,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:18,203 INFO L82 PathProgramCache]: Analyzing trace with hash 547492677, now seen corresponding path program 146 times [2021-06-06 00:07:18,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:18,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066404251] [2021-06-06 00:07:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:07:18,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:18,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066404251] [2021-06-06 00:07:18,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066404251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:18,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845791820] [2021-06-06 00:07:18,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:18,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:07:18,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:18,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:18,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:18,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845791820] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:18,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:18,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:07:18,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096048260] [2021-06-06 00:07:18,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:18,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:18,354 INFO L87 Difference]: Start difference. First operand 40429 states and 157545 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:18,933 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-06-06 00:07:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:19,641 INFO L93 Difference]: Finished difference Result 60725 states and 226603 transitions. [2021-06-06 00:07:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-06 00:07:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:19,798 INFO L225 Difference]: With dead ends: 60725 [2021-06-06 00:07:19,798 INFO L226 Difference]: Without dead ends: 60725 [2021-06-06 00:07:19,799 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 737.0ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:07:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60725 states. [2021-06-06 00:07:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60725 to 40525. [2021-06-06 00:07:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40525 states, 40524 states have (on average 3.8954446747606357) internal successors, (157859), 40524 states have internal predecessors, (157859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40525 states to 40525 states and 157859 transitions. [2021-06-06 00:07:21,156 INFO L78 Accepts]: Start accepts. Automaton has 40525 states and 157859 transitions. Word has length 28 [2021-06-06 00:07:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:21,156 INFO L482 AbstractCegarLoop]: Abstraction has 40525 states and 157859 transitions. [2021-06-06 00:07:21,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 40525 states and 157859 transitions. [2021-06-06 00:07:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:21,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:21,227 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:21,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4121 [2021-06-06 00:07:21,427 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2104435465, now seen corresponding path program 147 times [2021-06-06 00:07:21,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:21,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868833566] [2021-06-06 00:07:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:07:21,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:21,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868833566] [2021-06-06 00:07:21,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868833566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:21,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404776840] [2021-06-06 00:07:21,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:21,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:07:21,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:21,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:21,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:21,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404776840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:21,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:21,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:07:21,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921175406] [2021-06-06 00:07:21,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:21,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:21,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:21,582 INFO L87 Difference]: Start difference. First operand 40525 states and 157859 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:22,745 INFO L93 Difference]: Finished difference Result 60415 states and 225723 transitions. [2021-06-06 00:07:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:07:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:22,898 INFO L225 Difference]: With dead ends: 60415 [2021-06-06 00:07:22,898 INFO L226 Difference]: Without dead ends: 60407 [2021-06-06 00:07:22,899 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 496.7ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:07:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60407 states. [2021-06-06 00:07:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60407 to 40457. [2021-06-06 00:07:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40457 states, 40456 states have (on average 3.8967520268934153) internal successors, (157647), 40456 states have internal predecessors, (157647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40457 states to 40457 states and 157647 transitions. [2021-06-06 00:07:24,291 INFO L78 Accepts]: Start accepts. Automaton has 40457 states and 157647 transitions. Word has length 28 [2021-06-06 00:07:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:24,291 INFO L482 AbstractCegarLoop]: Abstraction has 40457 states and 157647 transitions. [2021-06-06 00:07:24,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 40457 states and 157647 transitions. [2021-06-06 00:07:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:24,348 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:24,348 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:24,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4122 [2021-06-06 00:07:24,549 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:24,549 INFO L82 PathProgramCache]: Analyzing trace with hash 923074653, now seen corresponding path program 148 times [2021-06-06 00:07:24,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:24,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508837426] [2021-06-06 00:07:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:07:24,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:24,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508837426] [2021-06-06 00:07:24,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508837426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:24,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090535034] [2021-06-06 00:07:24,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:24,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:07:24,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:24,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:24,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:24,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090535034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:24,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:24,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:07:24,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373941809] [2021-06-06 00:07:24,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:07:24,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:24,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:07:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:07:24,692 INFO L87 Difference]: Start difference. First operand 40457 states and 157647 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:25,514 INFO L93 Difference]: Finished difference Result 59146 states and 222212 transitions. [2021-06-06 00:07:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:07:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:25,908 INFO L225 Difference]: With dead ends: 59146 [2021-06-06 00:07:25,908 INFO L226 Difference]: Without dead ends: 59122 [2021-06-06 00:07:25,908 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:07:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59122 states. [2021-06-06 00:07:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59122 to 40433. [2021-06-06 00:07:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40433 states, 40432 states have (on average 3.896888603086664) internal successors, (157559), 40432 states have internal predecessors, (157559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40433 states to 40433 states and 157559 transitions. [2021-06-06 00:07:27,099 INFO L78 Accepts]: Start accepts. Automaton has 40433 states and 157559 transitions. Word has length 28 [2021-06-06 00:07:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:27,099 INFO L482 AbstractCegarLoop]: Abstraction has 40433 states and 157559 transitions. [2021-06-06 00:07:27,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 40433 states and 157559 transitions. [2021-06-06 00:07:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:27,156 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:27,156 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:27,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4123 [2021-06-06 00:07:27,357 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash 100408761, now seen corresponding path program 149 times [2021-06-06 00:07:27,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:27,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457724561] [2021-06-06 00:07:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:27,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:27,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457724561] [2021-06-06 00:07:27,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457724561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:27,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115041352] [2021-06-06 00:07:27,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:27,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:07:27,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:27,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:27,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:27,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115041352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:27,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:27,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:07:27,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511054821] [2021-06-06 00:07:27,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:27,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:27,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:27,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:27,488 INFO L87 Difference]: Start difference. First operand 40433 states and 157559 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:29,090 INFO L93 Difference]: Finished difference Result 62335 states and 231295 transitions. [2021-06-06 00:07:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-06 00:07:29,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:29,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:29,239 INFO L225 Difference]: With dead ends: 62335 [2021-06-06 00:07:29,239 INFO L226 Difference]: Without dead ends: 62335 [2021-06-06 00:07:29,239 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 977.1ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-06 00:07:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62335 states. [2021-06-06 00:07:30,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62335 to 44875. [2021-06-06 00:07:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44875 states, 44874 states have (on average 3.8457458662031465) internal successors, (172574), 44874 states have internal predecessors, (172574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44875 states to 44875 states and 172574 transitions. [2021-06-06 00:07:30,702 INFO L78 Accepts]: Start accepts. Automaton has 44875 states and 172574 transitions. Word has length 28 [2021-06-06 00:07:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:30,703 INFO L482 AbstractCegarLoop]: Abstraction has 44875 states and 172574 transitions. [2021-06-06 00:07:30,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 44875 states and 172574 transitions. [2021-06-06 00:07:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:30,777 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:30,777 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:30,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4124,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:30,977 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:30,978 INFO L82 PathProgramCache]: Analyzing trace with hash 181784849, now seen corresponding path program 150 times [2021-06-06 00:07:30,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:30,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758496703] [2021-06-06 00:07:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:31,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:31,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758496703] [2021-06-06 00:07:31,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758496703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:31,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879456852] [2021-06-06 00:07:31,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:31,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:07:31,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:31,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:31,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879456852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:31,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:31,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:07:31,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814153407] [2021-06-06 00:07:31,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:31,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:31,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:31,109 INFO L87 Difference]: Start difference. First operand 44875 states and 172574 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:32,552 INFO L93 Difference]: Finished difference Result 61566 states and 229189 transitions. [2021-06-06 00:07:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:07:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:32,708 INFO L225 Difference]: With dead ends: 61566 [2021-06-06 00:07:32,708 INFO L226 Difference]: Without dead ends: 61558 [2021-06-06 00:07:32,709 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 671.1ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:07:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61558 states. [2021-06-06 00:07:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61558 to 43735. [2021-06-06 00:07:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43735 states, 43734 states have (on average 3.8648191338546667) internal successors, (169024), 43734 states have internal predecessors, (169024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43735 states to 43735 states and 169024 transitions. [2021-06-06 00:07:33,987 INFO L78 Accepts]: Start accepts. Automaton has 43735 states and 169024 transitions. Word has length 28 [2021-06-06 00:07:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:33,987 INFO L482 AbstractCegarLoop]: Abstraction has 43735 states and 169024 transitions. [2021-06-06 00:07:33,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 43735 states and 169024 transitions. [2021-06-06 00:07:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:34,051 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:34,051 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:34,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4125,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:34,252 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:34,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1333307123, now seen corresponding path program 151 times [2021-06-06 00:07:34,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:34,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698687474] [2021-06-06 00:07:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:34,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:34,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698687474] [2021-06-06 00:07:34,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698687474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:34,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444639817] [2021-06-06 00:07:34,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:34,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:34,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:34,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444639817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:34,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:34,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:07:34,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401400724] [2021-06-06 00:07:34,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:34,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:34,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:34,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:34,372 INFO L87 Difference]: Start difference. First operand 43735 states and 169024 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:35,732 INFO L93 Difference]: Finished difference Result 59917 states and 224585 transitions. [2021-06-06 00:07:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:07:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:35,884 INFO L225 Difference]: With dead ends: 59917 [2021-06-06 00:07:35,885 INFO L226 Difference]: Without dead ends: 59893 [2021-06-06 00:07:35,885 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 552.7ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:07:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59893 states. [2021-06-06 00:07:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59893 to 43743. [2021-06-06 00:07:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43743 states, 43742 states have (on average 3.8626948927803944) internal successors, (168962), 43742 states have internal predecessors, (168962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43743 states to 43743 states and 168962 transitions. [2021-06-06 00:07:37,394 INFO L78 Accepts]: Start accepts. Automaton has 43743 states and 168962 transitions. Word has length 28 [2021-06-06 00:07:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:37,395 INFO L482 AbstractCegarLoop]: Abstraction has 43743 states and 168962 transitions. [2021-06-06 00:07:37,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 43743 states and 168962 transitions. [2021-06-06 00:07:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:37,460 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:37,460 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:37,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4126,229 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:37,665 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:37,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:37,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1959694861, now seen corresponding path program 152 times [2021-06-06 00:07:37,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:37,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476017205] [2021-06-06 00:07:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:37,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:37,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476017205] [2021-06-06 00:07:37,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476017205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:37,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477094576] [2021-06-06 00:07:37,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:37,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:07:37,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:37,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:37,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:37,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477094576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:37,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:37,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:07:37,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40614005] [2021-06-06 00:07:37,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:37,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:37,799 INFO L87 Difference]: Start difference. First operand 43743 states and 168962 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:38,811 INFO L93 Difference]: Finished difference Result 61196 states and 228200 transitions. [2021-06-06 00:07:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:07:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:39,201 INFO L225 Difference]: With dead ends: 61196 [2021-06-06 00:07:39,202 INFO L226 Difference]: Without dead ends: 61156 [2021-06-06 00:07:39,202 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 500.5ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:07:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61156 states. [2021-06-06 00:07:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61156 to 43881. [2021-06-06 00:07:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43881 states, 43880 states have (on average 3.862010027347311) internal successors, (169465), 43880 states have internal predecessors, (169465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43881 states to 43881 states and 169465 transitions. [2021-06-06 00:07:40,360 INFO L78 Accepts]: Start accepts. Automaton has 43881 states and 169465 transitions. Word has length 28 [2021-06-06 00:07:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:40,360 INFO L482 AbstractCegarLoop]: Abstraction has 43881 states and 169465 transitions. [2021-06-06 00:07:40,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43881 states and 169465 transitions. [2021-06-06 00:07:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:40,425 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:40,425 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:40,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4127,230 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:40,625 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:40,626 INFO L82 PathProgramCache]: Analyzing trace with hash 243917385, now seen corresponding path program 153 times [2021-06-06 00:07:40,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:40,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677184646] [2021-06-06 00:07:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:40,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:40,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677184646] [2021-06-06 00:07:40,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677184646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:40,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707695737] [2021-06-06 00:07:40,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:40,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:07:40,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:40,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:40,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:40,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707695737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:40,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:40,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:07:40,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355276050] [2021-06-06 00:07:40,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:07:40,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:40,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:07:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:07:40,783 INFO L87 Difference]: Start difference. First operand 43881 states and 169465 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:42,374 INFO L93 Difference]: Finished difference Result 60421 states and 225864 transitions. [2021-06-06 00:07:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-06 00:07:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:42,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:42,540 INFO L225 Difference]: With dead ends: 60421 [2021-06-06 00:07:42,540 INFO L226 Difference]: Without dead ends: 60421 [2021-06-06 00:07:42,541 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 974.9ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-06 00:07:42,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60421 states. [2021-06-06 00:07:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60421 to 44786. [2021-06-06 00:07:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44786 states, 44785 states have (on average 3.8525399129172713) internal successors, (172536), 44785 states have internal predecessors, (172536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44786 states to 44786 states and 172536 transitions. [2021-06-06 00:07:43,850 INFO L78 Accepts]: Start accepts. Automaton has 44786 states and 172536 transitions. Word has length 28 [2021-06-06 00:07:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:43,850 INFO L482 AbstractCegarLoop]: Abstraction has 44786 states and 172536 transitions. [2021-06-06 00:07:43,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 44786 states and 172536 transitions. [2021-06-06 00:07:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:43,916 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:43,917 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:44,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4128 [2021-06-06 00:07:44,117 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1886956539, now seen corresponding path program 154 times [2021-06-06 00:07:44,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:44,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051971380] [2021-06-06 00:07:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:44,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:44,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051971380] [2021-06-06 00:07:44,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051971380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:44,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728762418] [2021-06-06 00:07:44,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:44,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:07:44,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:44,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:44,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:44,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728762418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:44,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:44,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:07:44,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213216611] [2021-06-06 00:07:44,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:07:44,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:44,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:07:44,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:07:44,463 INFO L87 Difference]: Start difference. First operand 44786 states and 172536 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:45,666 INFO L93 Difference]: Finished difference Result 59926 states and 224477 transitions. [2021-06-06 00:07:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:07:45,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:45,824 INFO L225 Difference]: With dead ends: 59926 [2021-06-06 00:07:45,824 INFO L226 Difference]: Without dead ends: 59918 [2021-06-06 00:07:45,825 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 837.2ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:07:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59918 states. [2021-06-06 00:07:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59918 to 44710. [2021-06-06 00:07:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44710 states, 44709 states have (on average 3.8538101948153614) internal successors, (172300), 44709 states have internal predecessors, (172300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44710 states to 44710 states and 172300 transitions. [2021-06-06 00:07:47,204 INFO L78 Accepts]: Start accepts. Automaton has 44710 states and 172300 transitions. Word has length 28 [2021-06-06 00:07:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:47,204 INFO L482 AbstractCegarLoop]: Abstraction has 44710 states and 172300 transitions. [2021-06-06 00:07:47,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 44710 states and 172300 transitions. [2021-06-06 00:07:47,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:47,281 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:47,281 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:47,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4129,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:47,481 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash 619499361, now seen corresponding path program 155 times [2021-06-06 00:07:47,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:47,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3165683] [2021-06-06 00:07:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:47,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:47,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3165683] [2021-06-06 00:07:47,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3165683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:47,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123948563] [2021-06-06 00:07:47,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:47,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:07:47,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:47,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:47,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:47,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123948563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:47,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:47,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:07:47,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606968552] [2021-06-06 00:07:47,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:47,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:47,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:47,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:47,632 INFO L87 Difference]: Start difference. First operand 44710 states and 172300 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:48,785 INFO L93 Difference]: Finished difference Result 59403 states and 223231 transitions. [2021-06-06 00:07:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:07:48,785 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:49,145 INFO L225 Difference]: With dead ends: 59403 [2021-06-06 00:07:49,145 INFO L226 Difference]: Without dead ends: 59379 [2021-06-06 00:07:49,145 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 584.2ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:07:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59379 states. [2021-06-06 00:07:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59379 to 44696. [2021-06-06 00:07:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44696 states, 44695 states have (on average 3.8537867770444123) internal successors, (172245), 44695 states have internal predecessors, (172245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44696 states to 44696 states and 172245 transitions. [2021-06-06 00:07:50,374 INFO L78 Accepts]: Start accepts. Automaton has 44696 states and 172245 transitions. Word has length 28 [2021-06-06 00:07:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:50,374 INFO L482 AbstractCegarLoop]: Abstraction has 44696 states and 172245 transitions. [2021-06-06 00:07:50,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 44696 states and 172245 transitions. [2021-06-06 00:07:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:50,441 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:50,441 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:50,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4130 [2021-06-06 00:07:50,641 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1303085277, now seen corresponding path program 156 times [2021-06-06 00:07:50,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:50,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609297797] [2021-06-06 00:07:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:50,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:50,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609297797] [2021-06-06 00:07:50,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609297797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:50,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208535672] [2021-06-06 00:07:50,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:50,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:07:50,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:50,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:50,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208535672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:50,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:50,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:07:50,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766498954] [2021-06-06 00:07:50,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:07:50,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:50,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:07:50,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:07:50,773 INFO L87 Difference]: Start difference. First operand 44696 states and 172245 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:52,022 INFO L93 Difference]: Finished difference Result 59185 states and 222538 transitions. [2021-06-06 00:07:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:07:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:52,166 INFO L225 Difference]: With dead ends: 59185 [2021-06-06 00:07:52,167 INFO L226 Difference]: Without dead ends: 59145 [2021-06-06 00:07:52,167 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 507.8ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:07:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59145 states. [2021-06-06 00:07:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59145 to 45045. [2021-06-06 00:07:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45045 states, 45044 states have (on average 3.855652251132226) internal successors, (173674), 45044 states have internal predecessors, (173674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45045 states to 45045 states and 173674 transitions. [2021-06-06 00:07:53,541 INFO L78 Accepts]: Start accepts. Automaton has 45045 states and 173674 transitions. Word has length 28 [2021-06-06 00:07:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:53,541 INFO L482 AbstractCegarLoop]: Abstraction has 45045 states and 173674 transitions. [2021-06-06 00:07:53,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 45045 states and 173674 transitions. [2021-06-06 00:07:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:53,607 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:53,607 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:53,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 234 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4131 [2021-06-06 00:07:53,807 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:53,808 INFO L82 PathProgramCache]: Analyzing trace with hash 806750187, now seen corresponding path program 157 times [2021-06-06 00:07:53,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:53,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891057484] [2021-06-06 00:07:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:53,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:53,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891057484] [2021-06-06 00:07:53,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891057484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:53,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864605632] [2021-06-06 00:07:53,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:53,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:53,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:53,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864605632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:53,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:53,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:07:53,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426015406] [2021-06-06 00:07:53,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:53,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:53,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:53,954 INFO L87 Difference]: Start difference. First operand 45045 states and 173674 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:55,374 INFO L93 Difference]: Finished difference Result 71823 states and 267438 transitions. [2021-06-06 00:07:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:07:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:55,557 INFO L225 Difference]: With dead ends: 71823 [2021-06-06 00:07:55,557 INFO L226 Difference]: Without dead ends: 71823 [2021-06-06 00:07:55,557 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 799.9ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:07:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71823 states. [2021-06-06 00:07:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71823 to 46211. [2021-06-06 00:07:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46211 states, 46210 states have (on average 3.86991993075092) internal successors, (178829), 46210 states have internal predecessors, (178829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46211 states to 46211 states and 178829 transitions. [2021-06-06 00:07:56,999 INFO L78 Accepts]: Start accepts. Automaton has 46211 states and 178829 transitions. Word has length 28 [2021-06-06 00:07:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:57,000 INFO L482 AbstractCegarLoop]: Abstraction has 46211 states and 178829 transitions. [2021-06-06 00:07:57,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 46211 states and 178829 transitions. [2021-06-06 00:07:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:07:57,064 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:57,064 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:57,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4132 [2021-06-06 00:07:57,267 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash 132028309, now seen corresponding path program 158 times [2021-06-06 00:07:57,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:57,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240329749] [2021-06-06 00:07:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:57,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:57,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240329749] [2021-06-06 00:07:57,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240329749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:57,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603696294] [2021-06-06 00:07:57,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:57,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:07:57,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:57,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:07:57,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:57,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603696294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:57,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:57,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:07:57,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982198655] [2021-06-06 00:07:57,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:07:57,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:57,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:07:57,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:57,425 INFO L87 Difference]: Start difference. First operand 46211 states and 178829 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:57,715 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2021-06-06 00:07:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:58,738 INFO L93 Difference]: Finished difference Result 65877 states and 248593 transitions. [2021-06-06 00:07:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:07:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:07:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:58,908 INFO L225 Difference]: With dead ends: 65877 [2021-06-06 00:07:58,908 INFO L226 Difference]: Without dead ends: 65877 [2021-06-06 00:07:58,908 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 771.2ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:07:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65877 states. [2021-06-06 00:08:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65877 to 46241. [2021-06-06 00:08:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46241 states, 46240 states have (on average 3.8697231833910033) internal successors, (178936), 46240 states have internal predecessors, (178936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46241 states to 46241 states and 178936 transitions. [2021-06-06 00:08:00,647 INFO L78 Accepts]: Start accepts. Automaton has 46241 states and 178936 transitions. Word has length 28 [2021-06-06 00:08:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:00,647 INFO L482 AbstractCegarLoop]: Abstraction has 46241 states and 178936 transitions. [2021-06-06 00:08:00,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 46241 states and 178936 transitions. [2021-06-06 00:08:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:00,724 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:00,724 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:00,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4133 [2021-06-06 00:08:00,924 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:00,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1785388485, now seen corresponding path program 159 times [2021-06-06 00:08:00,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:00,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396611615] [2021-06-06 00:08:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:00,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:00,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396611615] [2021-06-06 00:08:00,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396611615] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:00,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197941161] [2021-06-06 00:08:00,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:00,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:08:00,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:00,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:00,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:01,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197941161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:01,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:01,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:08:01,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926492144] [2021-06-06 00:08:01,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:08:01,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:01,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:08:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:08:01,088 INFO L87 Difference]: Start difference. First operand 46241 states and 178936 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:02,856 INFO L93 Difference]: Finished difference Result 66732 states and 251021 transitions. [2021-06-06 00:08:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:08:02,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:03,021 INFO L225 Difference]: With dead ends: 66732 [2021-06-06 00:08:03,022 INFO L226 Difference]: Without dead ends: 66732 [2021-06-06 00:08:03,022 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 870.2ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-06 00:08:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66732 states. [2021-06-06 00:08:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66732 to 46505. [2021-06-06 00:08:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46505 states, 46504 states have (on average 3.8662050576294513) internal successors, (179794), 46504 states have internal predecessors, (179794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46505 states to 46505 states and 179794 transitions. [2021-06-06 00:08:04,316 INFO L78 Accepts]: Start accepts. Automaton has 46505 states and 179794 transitions. Word has length 28 [2021-06-06 00:08:04,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:04,316 INFO L482 AbstractCegarLoop]: Abstraction has 46505 states and 179794 transitions. [2021-06-06 00:08:04,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 46505 states and 179794 transitions. [2021-06-06 00:08:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:04,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:04,385 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:04,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4134 [2021-06-06 00:08:04,586 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash -866539657, now seen corresponding path program 160 times [2021-06-06 00:08:04,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:04,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142389567] [2021-06-06 00:08:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:04,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:04,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142389567] [2021-06-06 00:08:04,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142389567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:04,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699443192] [2021-06-06 00:08:04,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:04,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:04,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:04,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:04,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:04,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699443192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:04,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:04,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:08:04,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600544222] [2021-06-06 00:08:04,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:08:04,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:08:04,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:08:04,738 INFO L87 Difference]: Start difference. First operand 46505 states and 179794 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:06,279 INFO L93 Difference]: Finished difference Result 65947 states and 248794 transitions. [2021-06-06 00:08:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:08:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:06,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:06,465 INFO L225 Difference]: With dead ends: 65947 [2021-06-06 00:08:06,465 INFO L226 Difference]: Without dead ends: 65943 [2021-06-06 00:08:06,466 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 711.8ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-06 00:08:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65943 states. [2021-06-06 00:08:07,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65943 to 46141. [2021-06-06 00:08:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46141 states, 46140 states have (on average 3.8699176419592543) internal successors, (178558), 46140 states have internal predecessors, (178558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46141 states to 46141 states and 178558 transitions. [2021-06-06 00:08:07,904 INFO L78 Accepts]: Start accepts. Automaton has 46141 states and 178558 transitions. Word has length 28 [2021-06-06 00:08:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:07,904 INFO L482 AbstractCegarLoop]: Abstraction has 46141 states and 178558 transitions. [2021-06-06 00:08:07,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 46141 states and 178558 transitions. [2021-06-06 00:08:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:07,972 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:07,972 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:08,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4135,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:08,173 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1338899459, now seen corresponding path program 161 times [2021-06-06 00:08:08,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:08,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306551799] [2021-06-06 00:08:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:08,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:08,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306551799] [2021-06-06 00:08:08,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306551799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:08,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817112977] [2021-06-06 00:08:08,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:08,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:08,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:08,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:08,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:08,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817112977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:08,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:08,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:08:08,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416170998] [2021-06-06 00:08:08,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:08:08,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:08,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:08:08,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:08:08,320 INFO L87 Difference]: Start difference. First operand 46141 states and 178558 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:09,433 INFO L93 Difference]: Finished difference Result 60232 states and 229011 transitions. [2021-06-06 00:08:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:08:09,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:09,590 INFO L225 Difference]: With dead ends: 60232 [2021-06-06 00:08:09,590 INFO L226 Difference]: Without dead ends: 60232 [2021-06-06 00:08:09,590 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 451.0ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:08:09,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60232 states. [2021-06-06 00:08:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60232 to 46157. [2021-06-06 00:08:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46157 states, 46156 states have (on average 3.8717826501429933) internal successors, (178706), 46156 states have internal predecessors, (178706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46157 states to 46157 states and 178706 transitions. [2021-06-06 00:08:10,861 INFO L78 Accepts]: Start accepts. Automaton has 46157 states and 178706 transitions. Word has length 28 [2021-06-06 00:08:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:10,862 INFO L482 AbstractCegarLoop]: Abstraction has 46157 states and 178706 transitions. [2021-06-06 00:08:10,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 46157 states and 178706 transitions. [2021-06-06 00:08:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:10,929 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:10,929 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:11,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4136,239 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:11,129 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1775748157, now seen corresponding path program 162 times [2021-06-06 00:08:11,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:11,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510295771] [2021-06-06 00:08:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:11,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:11,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510295771] [2021-06-06 00:08:11,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510295771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:11,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154205663] [2021-06-06 00:08:11,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:11,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:08:11,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:11,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:11,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:11,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154205663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:11,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:11,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:08:11,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388833060] [2021-06-06 00:08:11,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:08:11,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:11,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:08:11,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:08:11,268 INFO L87 Difference]: Start difference. First operand 46157 states and 178706 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:12,297 INFO L93 Difference]: Finished difference Result 59549 states and 227144 transitions. [2021-06-06 00:08:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:08:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:12,466 INFO L225 Difference]: With dead ends: 59549 [2021-06-06 00:08:12,466 INFO L226 Difference]: Without dead ends: 59537 [2021-06-06 00:08:12,467 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 571.6ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:08:12,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59537 states. [2021-06-06 00:08:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59537 to 46091. [2021-06-06 00:08:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46091 states, 46090 states have (on average 3.8729225428509437) internal successors, (178503), 46090 states have internal predecessors, (178503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46091 states to 46091 states and 178503 transitions. [2021-06-06 00:08:13,726 INFO L78 Accepts]: Start accepts. Automaton has 46091 states and 178503 transitions. Word has length 28 [2021-06-06 00:08:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:13,726 INFO L482 AbstractCegarLoop]: Abstraction has 46091 states and 178503 transitions. [2021-06-06 00:08:13,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 46091 states and 178503 transitions. [2021-06-06 00:08:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:13,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:13,793 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:13,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4137,240 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:13,994 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:13,994 INFO L82 PathProgramCache]: Analyzing trace with hash 517999999, now seen corresponding path program 163 times [2021-06-06 00:08:13,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:13,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302304814] [2021-06-06 00:08:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:14,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:14,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302304814] [2021-06-06 00:08:14,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302304814] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:14,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675569211] [2021-06-06 00:08:14,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:14,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:14,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:14,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675569211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:14,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:14,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:08:14,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147864727] [2021-06-06 00:08:14,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:08:14,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:14,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:08:14,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:08:14,140 INFO L87 Difference]: Start difference. First operand 46091 states and 178503 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:15,001 INFO L93 Difference]: Finished difference Result 50569 states and 193277 transitions. [2021-06-06 00:08:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:08:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:15,131 INFO L225 Difference]: With dead ends: 50569 [2021-06-06 00:08:15,131 INFO L226 Difference]: Without dead ends: 50569 [2021-06-06 00:08:15,132 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 305.8ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:08:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50569 states. [2021-06-06 00:08:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50569 to 46299. [2021-06-06 00:08:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46299 states, 46298 states have (on average 3.8704695667199447) internal successors, (179195), 46298 states have internal predecessors, (179195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46299 states to 46299 states and 179195 transitions. [2021-06-06 00:08:16,253 INFO L78 Accepts]: Start accepts. Automaton has 46299 states and 179195 transitions. Word has length 28 [2021-06-06 00:08:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:16,253 INFO L482 AbstractCegarLoop]: Abstraction has 46299 states and 179195 transitions. [2021-06-06 00:08:16,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 46299 states and 179195 transitions. [2021-06-06 00:08:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:16,324 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:16,324 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:16,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4138,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:16,524 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:16,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash -480567967, now seen corresponding path program 164 times [2021-06-06 00:08:16,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:16,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058025829] [2021-06-06 00:08:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:16,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:16,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058025829] [2021-06-06 00:08:16,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058025829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:16,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962590014] [2021-06-06 00:08:16,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:16,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:16,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:16,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:16,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:16,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962590014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:16,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:16,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:08:16,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733686109] [2021-06-06 00:08:16,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:08:16,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:16,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:08:16,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:08:16,665 INFO L87 Difference]: Start difference. First operand 46299 states and 179195 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:17,224 INFO L93 Difference]: Finished difference Result 50416 states and 192879 transitions. [2021-06-06 00:08:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:08:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:17,358 INFO L225 Difference]: With dead ends: 50416 [2021-06-06 00:08:17,358 INFO L226 Difference]: Without dead ends: 50412 [2021-06-06 00:08:17,358 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 246.9ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:08:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50412 states. [2021-06-06 00:08:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50412 to 46239. [2021-06-06 00:08:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46239 states, 46238 states have (on average 3.8713395908127515) internal successors, (179003), 46238 states have internal predecessors, (179003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46239 states to 46239 states and 179003 transitions. [2021-06-06 00:08:18,635 INFO L78 Accepts]: Start accepts. Automaton has 46239 states and 179003 transitions. Word has length 28 [2021-06-06 00:08:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:18,636 INFO L482 AbstractCegarLoop]: Abstraction has 46239 states and 179003 transitions. [2021-06-06 00:08:18,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 46239 states and 179003 transitions. [2021-06-06 00:08:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:18,958 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:18,958 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:19,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4139,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:19,159 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:19,159 INFO L82 PathProgramCache]: Analyzing trace with hash -510371023, now seen corresponding path program 78 times [2021-06-06 00:08:19,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:19,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25000377] [2021-06-06 00:08:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:19,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:19,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25000377] [2021-06-06 00:08:19,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25000377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:19,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367548707] [2021-06-06 00:08:19,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:19,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:08:19,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:19,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:19,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:19,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367548707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:19,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:19,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:08:19,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708544108] [2021-06-06 00:08:19,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:19,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:19,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:19,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:19,267 INFO L87 Difference]: Start difference. First operand 46239 states and 179003 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:19,825 INFO L93 Difference]: Finished difference Result 50471 states and 192992 transitions. [2021-06-06 00:08:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:08:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:19,955 INFO L225 Difference]: With dead ends: 50471 [2021-06-06 00:08:19,955 INFO L226 Difference]: Without dead ends: 50471 [2021-06-06 00:08:19,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 203.6ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:08:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50471 states. [2021-06-06 00:08:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50471 to 46343. [2021-06-06 00:08:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46343 states, 46342 states have (on average 3.869643088343188) internal successors, (179327), 46342 states have internal predecessors, (179327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46343 states to 46343 states and 179327 transitions. [2021-06-06 00:08:21,112 INFO L78 Accepts]: Start accepts. Automaton has 46343 states and 179327 transitions. Word has length 28 [2021-06-06 00:08:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:21,112 INFO L482 AbstractCegarLoop]: Abstraction has 46343 states and 179327 transitions. [2021-06-06 00:08:21,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 46343 states and 179327 transitions. [2021-06-06 00:08:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:21,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:21,181 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:21,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4140 [2021-06-06 00:08:21,382 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:21,382 INFO L82 PathProgramCache]: Analyzing trace with hash 394977929, now seen corresponding path program 79 times [2021-06-06 00:08:21,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:21,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537318105] [2021-06-06 00:08:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:21,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:21,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537318105] [2021-06-06 00:08:21,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537318105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:21,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875569554] [2021-06-06 00:08:21,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:21,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:21,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:21,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875569554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:21,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:21,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-06 00:08:21,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979042342] [2021-06-06 00:08:21,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:21,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:21,477 INFO L87 Difference]: Start difference. First operand 46343 states and 179327 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:22,109 INFO L93 Difference]: Finished difference Result 50566 states and 193429 transitions. [2021-06-06 00:08:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:08:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:22,235 INFO L225 Difference]: With dead ends: 50566 [2021-06-06 00:08:22,235 INFO L226 Difference]: Without dead ends: 50554 [2021-06-06 00:08:22,235 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:08:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50554 states. [2021-06-06 00:08:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50554 to 46475. [2021-06-06 00:08:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46475 states, 46474 states have (on average 3.867861600034428) internal successors, (179755), 46474 states have internal predecessors, (179755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46475 states to 46475 states and 179755 transitions. [2021-06-06 00:08:23,459 INFO L78 Accepts]: Start accepts. Automaton has 46475 states and 179755 transitions. Word has length 28 [2021-06-06 00:08:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:23,460 INFO L482 AbstractCegarLoop]: Abstraction has 46475 states and 179755 transitions. [2021-06-06 00:08:23,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 46475 states and 179755 transitions. [2021-06-06 00:08:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:23,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:23,540 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:23,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4141 [2021-06-06 00:08:23,741 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:23,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash -597515635, now seen corresponding path program 80 times [2021-06-06 00:08:23,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:23,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615355929] [2021-06-06 00:08:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:23,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:23,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615355929] [2021-06-06 00:08:23,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615355929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:23,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569796914] [2021-06-06 00:08:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:23,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:23,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:23,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:08:23,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:23,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569796914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:23,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:23,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:08:23,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113958691] [2021-06-06 00:08:23,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:23,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:23,850 INFO L87 Difference]: Start difference. First operand 46475 states and 179755 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:24,310 INFO L93 Difference]: Finished difference Result 50530 states and 193345 transitions. [2021-06-06 00:08:24,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:08:24,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:24,443 INFO L225 Difference]: With dead ends: 50530 [2021-06-06 00:08:24,443 INFO L226 Difference]: Without dead ends: 50510 [2021-06-06 00:08:24,443 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:08:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50510 states. [2021-06-06 00:08:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50510 to 46475. [2021-06-06 00:08:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46475 states, 46474 states have (on average 3.867775530404097) internal successors, (179751), 46474 states have internal predecessors, (179751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46475 states to 46475 states and 179751 transitions. [2021-06-06 00:08:25,674 INFO L78 Accepts]: Start accepts. Automaton has 46475 states and 179751 transitions. Word has length 28 [2021-06-06 00:08:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:25,674 INFO L482 AbstractCegarLoop]: Abstraction has 46475 states and 179751 transitions. [2021-06-06 00:08:25,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 46475 states and 179751 transitions. [2021-06-06 00:08:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:25,746 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:25,746 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:25,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4142 [2021-06-06 00:08:25,946 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:25,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1058352779, now seen corresponding path program 165 times [2021-06-06 00:08:25,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:25,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017833375] [2021-06-06 00:08:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:25,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:25,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017833375] [2021-06-06 00:08:25,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017833375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:25,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618218159] [2021-06-06 00:08:25,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:26,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:26,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:26,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:08:26,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:26,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618218159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:26,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:26,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:08:26,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943944096] [2021-06-06 00:08:26,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:26,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:26,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:26,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:26,062 INFO L87 Difference]: Start difference. First operand 46475 states and 179751 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:26,732 INFO L93 Difference]: Finished difference Result 51418 states and 197281 transitions. [2021-06-06 00:08:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:08:26,732 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:26,864 INFO L225 Difference]: With dead ends: 51418 [2021-06-06 00:08:26,864 INFO L226 Difference]: Without dead ends: 51415 [2021-06-06 00:08:26,864 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 353.4ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:08:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51415 states. [2021-06-06 00:08:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51415 to 48550. [2021-06-06 00:08:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48550 states, 48549 states have (on average 3.876434118107479) internal successors, (188197), 48549 states have internal predecessors, (188197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 188197 transitions. [2021-06-06 00:08:28,012 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 188197 transitions. Word has length 28 [2021-06-06 00:08:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:28,012 INFO L482 AbstractCegarLoop]: Abstraction has 48550 states and 188197 transitions. [2021-06-06 00:08:28,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 188197 transitions. [2021-06-06 00:08:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:28,089 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:28,089 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:28,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4143,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:28,289 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash 287300907, now seen corresponding path program 166 times [2021-06-06 00:08:28,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:28,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194767819] [2021-06-06 00:08:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:28,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:28,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194767819] [2021-06-06 00:08:28,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194767819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:28,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503122826] [2021-06-06 00:08:28,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:28,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:28,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:28,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:08:28,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:28,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503122826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:28,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:28,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:08:28,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228296165] [2021-06-06 00:08:28,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:28,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:28,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:28,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:28,406 INFO L87 Difference]: Start difference. First operand 48550 states and 188197 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:28,914 INFO L93 Difference]: Finished difference Result 54116 states and 206168 transitions. [2021-06-06 00:08:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:08:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:29,056 INFO L225 Difference]: With dead ends: 54116 [2021-06-06 00:08:29,057 INFO L226 Difference]: Without dead ends: 54116 [2021-06-06 00:08:29,057 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 154.4ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:08:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54116 states. [2021-06-06 00:08:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54116 to 43065. [2021-06-06 00:08:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43065 states, 43064 states have (on average 3.8637609139884823) internal successors, (166389), 43064 states have internal predecessors, (166389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43065 states to 43065 states and 166389 transitions. [2021-06-06 00:08:30,305 INFO L78 Accepts]: Start accepts. Automaton has 43065 states and 166389 transitions. Word has length 28 [2021-06-06 00:08:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:30,305 INFO L482 AbstractCegarLoop]: Abstraction has 43065 states and 166389 transitions. [2021-06-06 00:08:30,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 43065 states and 166389 transitions. [2021-06-06 00:08:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:30,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:30,674 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:30,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4144 [2021-06-06 00:08:30,874 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:30,875 INFO L82 PathProgramCache]: Analyzing trace with hash 811277253, now seen corresponding path program 167 times [2021-06-06 00:08:30,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:30,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321718484] [2021-06-06 00:08:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:30,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:30,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321718484] [2021-06-06 00:08:30,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321718484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:30,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989504380] [2021-06-06 00:08:30,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:30,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:08:30,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:30,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:08:30,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:30,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989504380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:30,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:30,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:08:30,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390036542] [2021-06-06 00:08:30,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:30,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:30,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:30,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:30,993 INFO L87 Difference]: Start difference. First operand 43065 states and 166389 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:31,520 INFO L93 Difference]: Finished difference Result 47945 states and 182818 transitions. [2021-06-06 00:08:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:08:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:31,633 INFO L225 Difference]: With dead ends: 47945 [2021-06-06 00:08:31,633 INFO L226 Difference]: Without dead ends: 47945 [2021-06-06 00:08:31,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 201.8ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:08:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47945 states. [2021-06-06 00:08:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47945 to 43898. [2021-06-06 00:08:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43898 states, 43897 states have (on average 3.8623823951522884) internal successors, (169547), 43897 states have internal predecessors, (169547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43898 states to 43898 states and 169547 transitions. [2021-06-06 00:08:32,730 INFO L78 Accepts]: Start accepts. Automaton has 43898 states and 169547 transitions. Word has length 28 [2021-06-06 00:08:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:32,730 INFO L482 AbstractCegarLoop]: Abstraction has 43898 states and 169547 transitions. [2021-06-06 00:08:32,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 43898 states and 169547 transitions. [2021-06-06 00:08:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:32,794 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:32,794 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:32,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 248 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4145 [2021-06-06 00:08:32,996 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:32,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1041987733, now seen corresponding path program 168 times [2021-06-06 00:08:32,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:32,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730676228] [2021-06-06 00:08:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:33,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:33,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730676228] [2021-06-06 00:08:33,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730676228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:33,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712193118] [2021-06-06 00:08:33,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:33,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:08:33,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:33,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:08:33,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:33,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712193118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:33,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:33,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:08:33,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156688008] [2021-06-06 00:08:33,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:33,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:33,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:33,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:33,120 INFO L87 Difference]: Start difference. First operand 43898 states and 169547 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:33,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:33,552 INFO L93 Difference]: Finished difference Result 45655 states and 175408 transitions. [2021-06-06 00:08:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:08:33,553 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:33,660 INFO L225 Difference]: With dead ends: 45655 [2021-06-06 00:08:33,660 INFO L226 Difference]: Without dead ends: 45655 [2021-06-06 00:08:33,660 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:08:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45655 states. [2021-06-06 00:08:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45655 to 43906. [2021-06-06 00:08:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43906 states, 43905 states have (on average 3.862225259082109) internal successors, (169571), 43905 states have internal predecessors, (169571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43906 states to 43906 states and 169571 transitions. [2021-06-06 00:08:34,704 INFO L78 Accepts]: Start accepts. Automaton has 43906 states and 169571 transitions. Word has length 28 [2021-06-06 00:08:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:34,704 INFO L482 AbstractCegarLoop]: Abstraction has 43906 states and 169571 transitions. [2021-06-06 00:08:34,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 43906 states and 169571 transitions. [2021-06-06 00:08:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:08:34,771 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:34,771 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:34,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4146,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:34,971 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1139256197, now seen corresponding path program 169 times [2021-06-06 00:08:34,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:34,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088896037] [2021-06-06 00:08:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:35,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:35,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088896037] [2021-06-06 00:08:35,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088896037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:35,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571090973] [2021-06-06 00:08:35,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:35,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:08:35,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:35,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571090973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:35,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:35,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:08:35,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881125434] [2021-06-06 00:08:35,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:08:35,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:08:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:08:35,092 INFO L87 Difference]: Start difference. First operand 43906 states and 169571 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:35,724 INFO L93 Difference]: Finished difference Result 45371 states and 174477 transitions. [2021-06-06 00:08:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:08:35,724 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-06 00:08:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:35,828 INFO L225 Difference]: With dead ends: 45371 [2021-06-06 00:08:35,828 INFO L226 Difference]: Without dead ends: 45371 [2021-06-06 00:08:35,828 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 340.3ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:08:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45371 states. [2021-06-06 00:08:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45371 to 43796. [2021-06-06 00:08:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43796 states, 43795 states have (on average 3.8620390455531455) internal successors, (169138), 43795 states have internal predecessors, (169138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43796 states to 43796 states and 169138 transitions. [2021-06-06 00:08:36,887 INFO L78 Accepts]: Start accepts. Automaton has 43796 states and 169138 transitions. Word has length 28 [2021-06-06 00:08:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:36,887 INFO L482 AbstractCegarLoop]: Abstraction has 43796 states and 169138 transitions. [2021-06-06 00:08:36,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 43796 states and 169138 transitions. [2021-06-06 00:08:36,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:08:36,960 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:36,960 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:37,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4147,250 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:37,161 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash -993746325, now seen corresponding path program 170 times [2021-06-06 00:08:37,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:37,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189648772] [2021-06-06 00:08:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:37,656 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-06-06 00:08:37,913 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-06-06 00:08:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:38,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:38,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189648772] [2021-06-06 00:08:38,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189648772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:38,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797107294] [2021-06-06 00:08:38,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:38,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:38,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:08:38,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:38,502 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-06 00:08:38,700 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:08:39,154 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:08:39,356 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:08:39,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:39,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:39,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:39,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:08:39,773 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:39,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:39,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:39,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:39,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:08:39,783 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,096 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 110 [2021-06-06 00:08:40,096 INFO L628 ElimStorePlain]: treesize reduction 342, result has 42.2 percent of original size [2021-06-06 00:08:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:40,106 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,192 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:40,192 INFO L518 ElimStorePlain]: Eliminatee v_prenex_561 vanished before elimination [2021-06-06 00:08:40,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:08:40,200 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:40,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:40,286 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:40,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:40,364 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:40,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:40,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:40,440 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:40,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:40,507 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:40,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:40,562 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:08:40,563 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:668, output treesize:36 [2021-06-06 00:08:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:40,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797107294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:40,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:40,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:08:40,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976076325] [2021-06-06 00:08:40,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:08:40,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:40,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:08:40,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:08:40,603 INFO L87 Difference]: Start difference. First operand 43796 states and 169138 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:40,903 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-06 00:08:41,104 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2021-06-06 00:08:41,482 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-06-06 00:08:41,889 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-06 00:08:42,118 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2021-06-06 00:08:42,402 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 58 [2021-06-06 00:08:43,064 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 100 [2021-06-06 00:08:43,738 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2021-06-06 00:08:43,953 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-06-06 00:08:44,653 WARN L205 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2021-06-06 00:08:45,012 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 104 [2021-06-06 00:08:45,408 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 105 [2021-06-06 00:08:46,308 WARN L205 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2021-06-06 00:08:46,645 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-06 00:08:47,029 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2021-06-06 00:08:47,330 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2021-06-06 00:08:47,786 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2021-06-06 00:08:48,079 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-06-06 00:08:48,323 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2021-06-06 00:08:48,721 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2021-06-06 00:08:48,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:48,943 INFO L93 Difference]: Finished difference Result 53704 states and 203394 transitions. [2021-06-06 00:08:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:08:48,945 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:08:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:49,156 INFO L225 Difference]: With dead ends: 53704 [2021-06-06 00:08:49,156 INFO L226 Difference]: Without dead ends: 53629 [2021-06-06 00:08:49,156 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 9035.9ms TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:08:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53629 states. [2021-06-06 00:08:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53629 to 43931. [2021-06-06 00:08:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43931 states, 43930 states have (on average 3.8612110175278853) internal successors, (169623), 43930 states have internal predecessors, (169623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43931 states to 43931 states and 169623 transitions. [2021-06-06 00:08:50,281 INFO L78 Accepts]: Start accepts. Automaton has 43931 states and 169623 transitions. Word has length 30 [2021-06-06 00:08:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:50,281 INFO L482 AbstractCegarLoop]: Abstraction has 43931 states and 169623 transitions. [2021-06-06 00:08:50,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 43931 states and 169623 transitions. [2021-06-06 00:08:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:08:50,350 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:50,350 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:50,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4148,251 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:50,551 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:50,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:50,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1272822955, now seen corresponding path program 171 times [2021-06-06 00:08:50,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:50,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386191693] [2021-06-06 00:08:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:51,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:51,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386191693] [2021-06-06 00:08:51,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386191693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:51,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443474015] [2021-06-06 00:08:51,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:51,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:08:51,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:51,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 00:08:51,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:51,644 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-06 00:08:51,852 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:08:52,168 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-06-06 00:08:52,556 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2021-06-06 00:08:53,110 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:08:53,386 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:08:53,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-06 00:08:53,391 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:54,793 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 354 DAG size of output: 338 [2021-06-06 00:08:54,793 INFO L628 ElimStorePlain]: treesize reduction 310, result has 77.1 percent of original size [2021-06-06 00:08:54,860 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:08:54,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-06 00:08:54,861 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,491 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2021-06-06 00:08:55,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:55,563 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:08:55,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2021-06-06 00:08:55,583 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,734 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2021-06-06 00:08:56,734 INFO L628 ElimStorePlain]: treesize reduction 9, result has 99.1 percent of original size [2021-06-06 00:08:56,811 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:08:56,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-06 00:08:56,823 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,900 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:08:56,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-06 00:08:56,908 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:57,964 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 344 DAG size of output: 330 [2021-06-06 00:08:57,965 INFO L628 ElimStorePlain]: treesize reduction 77, result has 92.5 percent of original size [2021-06-06 00:08:58,041 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:08:58,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:08:58,044 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:58,076 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:08:58,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:08:58,076 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:58,548 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2021-06-06 00:08:58,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:58,628 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:08:58,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:08:58,638 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:58,712 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:08:58,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-06 00:08:58,719 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,626 WARN L205 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 325 [2021-06-06 00:08:59,626 INFO L628 ElimStorePlain]: treesize reduction 68, result has 92.5 percent of original size [2021-06-06 00:08:59,746 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:08:59,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-06 00:08:59,748 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,810 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:08:59,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-06 00:08:59,813 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:00,636 WARN L205 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2021-06-06 00:09:00,637 INFO L628 ElimStorePlain]: treesize reduction 45, result has 94.6 percent of original size [2021-06-06 00:09:00,681 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:00,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-06 00:09:00,704 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:01,083 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2021-06-06 00:09:01,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:01,149 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:09:01,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:09:01,156 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:01,538 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2021-06-06 00:09:01,538 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:01,584 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:01,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2021-06-06 00:09:01,596 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:01,947 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2021-06-06 00:09:01,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:02,003 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:09:02,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:09:02,007 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:02,360 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-06 00:09:02,361 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:02,417 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:09:02,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:09:02,422 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:02,764 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2021-06-06 00:09:02,764 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:02,821 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:09:02,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-06 00:09:02,826 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:03,171 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2021-06-06 00:09:03,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:03,235 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:09:03,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-06 00:09:03,247 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:03,930 WARN L205 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 279 [2021-06-06 00:09:03,930 INFO L628 ElimStorePlain]: treesize reduction 26, result has 96.2 percent of original size [2021-06-06 00:09:04,000 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:09:04,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-06 00:09:04,003 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:04,346 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-06 00:09:04,346 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:04,448 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:09:04,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 43 [2021-06-06 00:09:04,450 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:04,775 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-06 00:09:04,775 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:04,848 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-06 00:09:04,848 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 48 variables, input treesize:1363, output treesize:913 [2021-06-06 00:09:05,135 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 35 [2021-06-06 00:09:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:05,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443474015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:05,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:05,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-06 00:09:05,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280733449] [2021-06-06 00:09:05,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:09:05,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:05,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:09:05,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:09:05,186 INFO L87 Difference]: Start difference. First operand 43931 states and 169623 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:05,610 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2021-06-06 00:09:05,896 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-06 00:09:06,350 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-06-06 00:09:06,629 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-06-06 00:09:06,818 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2021-06-06 00:09:07,005 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 50 [2021-06-06 00:09:07,269 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:09:07,492 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2021-06-06 00:09:07,790 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-06-06 00:09:08,633 WARN L205 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 123 [2021-06-06 00:09:09,165 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2021-06-06 00:09:09,349 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2021-06-06 00:09:10,340 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 109 [2021-06-06 00:09:11,290 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 148 [2021-06-06 00:09:12,223 WARN L205 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 134 [2021-06-06 00:09:12,681 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2021-06-06 00:09:13,121 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:09:13,434 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-06-06 00:09:13,637 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-06-06 00:09:14,110 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 107 [2021-06-06 00:09:15,776 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 186 DAG size of output: 173 [2021-06-06 00:09:16,302 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 40 [2021-06-06 00:09:16,568 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-06-06 00:09:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:16,749 INFO L93 Difference]: Finished difference Result 53564 states and 203065 transitions. [2021-06-06 00:09:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:09:16,749 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:09:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:16,887 INFO L225 Difference]: With dead ends: 53564 [2021-06-06 00:09:16,887 INFO L226 Difference]: Without dead ends: 53534 [2021-06-06 00:09:16,888 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 12128.1ms TimeCoverageRelationStatistics Valid=512, Invalid=3148, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:09:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53534 states. [2021-06-06 00:09:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53534 to 43946. [2021-06-06 00:09:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43946 states, 43945 states have (on average 3.8610080782796676) internal successors, (169672), 43945 states have internal predecessors, (169672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43946 states to 43946 states and 169672 transitions. [2021-06-06 00:09:18,102 INFO L78 Accepts]: Start accepts. Automaton has 43946 states and 169672 transitions. Word has length 30 [2021-06-06 00:09:18,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:18,102 INFO L482 AbstractCegarLoop]: Abstraction has 43946 states and 169672 transitions. [2021-06-06 00:09:18,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:18,103 INFO L276 IsEmpty]: Start isEmpty. Operand 43946 states and 169672 transitions. [2021-06-06 00:09:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:09:18,171 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:18,171 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:18,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4189 [2021-06-06 00:09:18,372 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1430715033, now seen corresponding path program 172 times [2021-06-06 00:09:18,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:18,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515078115] [2021-06-06 00:09:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:18,887 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-06 00:09:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:19,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:19,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515078115] [2021-06-06 00:09:19,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515078115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:19,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286316084] [2021-06-06 00:09:19,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:19,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:19,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:09:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:19,893 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 00:09:20,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:09:20,529 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:20,541 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:09:20,553 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:09:20,565 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:20,577 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:09:20,589 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:09:20,601 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:09:20,613 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:09:20,625 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:09:20,637 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:20,649 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:09:20,660 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:20,672 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:09:20,684 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:09:20,696 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:20,708 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:09:20,720 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:09:20,731 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:09:20,743 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-06 00:09:20,755 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:09:20,767 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:09:20,779 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:09:20,791 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 16 [2021-06-06 00:09:20,804 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:09:20,816 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:09:20,828 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:09:20,841 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:09:20,853 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:09:20,865 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:09:20,877 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:20,889 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:09:20,902 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:09:20,914 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2021-06-06 00:09:20,926 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:09:20,938 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-06 00:09:20,951 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:20,963 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:09:20,975 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:09:20,987 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:20,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:20,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:20,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:09:20,999 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:09:21,011 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 16 [2021-06-06 00:09:21,023 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:09:21,035 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:09:21,104 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:09:21,115 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:09:21,126 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:09:21,138 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:09:21,149 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:09:21,161 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:09:21,172 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:09:21,183 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:09:21,194 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:09:21,205 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:21,215 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:09:21,226 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:09:21,237 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2021-06-06 00:09:21,247 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:09:21,257 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:09:21,268 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:09:21,278 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:09:21,288 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:09:21,297 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:21,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:21,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:09:21,303 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:21,323 INFO L628 ElimStorePlain]: treesize reduction 39, result has 35.0 percent of original size [2021-06-06 00:09:21,324 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:21,324 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3328, output treesize:15 [2021-06-06 00:09:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:21,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286316084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:21,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:21,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-06 00:09:21,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312056196] [2021-06-06 00:09:21,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:09:21,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:21,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:09:21,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:09:21,355 INFO L87 Difference]: Start difference. First operand 43946 states and 169672 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:21,928 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-06-06 00:09:22,165 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2021-06-06 00:09:22,530 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2021-06-06 00:09:22,994 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 70 [2021-06-06 00:09:23,350 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-06-06 00:09:23,662 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-06-06 00:09:24,052 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-06-06 00:09:24,483 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2021-06-06 00:09:24,840 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-06-06 00:09:24,982 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2021-06-06 00:09:25,317 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-06-06 00:09:25,651 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-06-06 00:09:25,782 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-06-06 00:09:26,062 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2021-06-06 00:09:26,328 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-06-06 00:09:26,628 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-06-06 00:09:26,926 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2021-06-06 00:09:27,087 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:09:27,266 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2021-06-06 00:09:27,739 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-06-06 00:09:27,910 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-06 00:09:28,216 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-06-06 00:09:28,560 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-06-06 00:09:28,749 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-06-06 00:09:28,926 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-06-06 00:09:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:29,492 INFO L93 Difference]: Finished difference Result 55841 states and 209381 transitions. [2021-06-06 00:09:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:09:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:09:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:29,635 INFO L225 Difference]: With dead ends: 55841 [2021-06-06 00:09:29,636 INFO L226 Difference]: Without dead ends: 55811 [2021-06-06 00:09:29,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 7956.3ms TimeCoverageRelationStatistics Valid=553, Invalid=3229, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:09:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55811 states. [2021-06-06 00:09:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55811 to 43990. [2021-06-06 00:09:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43990 states, 43989 states have (on average 3.860851576530496) internal successors, (169835), 43989 states have internal predecessors, (169835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43990 states to 43990 states and 169835 transitions. [2021-06-06 00:09:30,793 INFO L78 Accepts]: Start accepts. Automaton has 43990 states and 169835 transitions. Word has length 30 [2021-06-06 00:09:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:30,793 INFO L482 AbstractCegarLoop]: Abstraction has 43990 states and 169835 transitions. [2021-06-06 00:09:30,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:30,793 INFO L276 IsEmpty]: Start isEmpty. Operand 43990 states and 169835 transitions. [2021-06-06 00:09:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:09:30,866 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:30,866 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:31,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4351 [2021-06-06 00:09:31,067 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:31,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:31,067 INFO L82 PathProgramCache]: Analyzing trace with hash 924713707, now seen corresponding path program 173 times [2021-06-06 00:09:31,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:31,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605654573] [2021-06-06 00:09:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:31,552 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-06 00:09:31,707 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-06-06 00:09:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:31,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:31,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605654573] [2021-06-06 00:09:31,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605654573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:31,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916380996] [2021-06-06 00:09:31,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:31,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:09:31,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:31,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:09:31,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:32,124 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-06 00:09:32,326 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:09:32,602 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:09:33,155 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2021-06-06 00:09:33,655 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-06 00:09:34,117 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 170 [2021-06-06 00:09:34,470 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2021-06-06 00:09:34,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:34,817 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:09:34,839 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:09:34,861 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:09:34,878 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:09:34,900 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2021-06-06 00:09:34,920 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:09:34,936 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2021-06-06 00:09:34,950 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:35,201 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 108 [2021-06-06 00:09:35,202 INFO L628 ElimStorePlain]: treesize reduction 256, result has 50.7 percent of original size [2021-06-06 00:09:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:35,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:35,214 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:35,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-06 00:09:35,225 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:35,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:35,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:35,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:35,237 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:35,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:35,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:35,245 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:35,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:35,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 34 dim-0 vars, 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:09:35,321 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 36 variables, input treesize:845, output treesize:36 [2021-06-06 00:09:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:35,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916380996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:35,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:35,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2021-06-06 00:09:35,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318506539] [2021-06-06 00:09:35,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:09:35,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:09:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:09:35,378 INFO L87 Difference]: Start difference. First operand 43990 states and 169835 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:36,357 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-06-06 00:09:36,637 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 73 [2021-06-06 00:09:38,164 WARN L205 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2021-06-06 00:09:38,924 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2021-06-06 00:09:39,284 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 84 [2021-06-06 00:09:39,550 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-06 00:09:40,605 WARN L205 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2021-06-06 00:09:41,405 WARN L205 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-06-06 00:09:41,605 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2021-06-06 00:09:41,904 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2021-06-06 00:09:42,180 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-06-06 00:09:43,589 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 149 DAG size of output: 115 [2021-06-06 00:09:43,765 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:09:44,597 WARN L205 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-06-06 00:09:45,033 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 87 [2021-06-06 00:09:45,347 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-06-06 00:09:46,284 WARN L205 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 114 [2021-06-06 00:09:47,538 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 221 DAG size of output: 143 [2021-06-06 00:09:47,866 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-06-06 00:09:48,916 WARN L205 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 103 [2021-06-06 00:09:49,856 WARN L205 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 131 [2021-06-06 00:09:50,406 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2021-06-06 00:09:50,785 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 114 [2021-06-06 00:09:51,012 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:09:52,022 WARN L205 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 117 [2021-06-06 00:09:52,622 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 125 [2021-06-06 00:09:52,892 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-06 00:09:53,298 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2021-06-06 00:09:54,381 WARN L205 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2021-06-06 00:09:55,050 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2021-06-06 00:09:55,798 WARN L205 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 123 [2021-06-06 00:09:56,404 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 195 [2021-06-06 00:09:57,178 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 195 [2021-06-06 00:09:57,903 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 188 [2021-06-06 00:09:58,440 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 192 [2021-06-06 00:09:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:58,781 INFO L93 Difference]: Finished difference Result 69300 states and 257529 transitions. [2021-06-06 00:09:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:09:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:09:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:58,955 INFO L225 Difference]: With dead ends: 69300 [2021-06-06 00:09:58,955 INFO L226 Difference]: Without dead ends: 69270 [2021-06-06 00:09:58,956 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 22962.9ms TimeCoverageRelationStatistics Valid=668, Invalid=5184, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:09:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69270 states. [2021-06-06 00:09:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69270 to 44041. [2021-06-06 00:09:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44041 states, 44040 states have (on average 3.86030881017257) internal successors, (170008), 44040 states have internal predecessors, (170008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44041 states to 44041 states and 170008 transitions. [2021-06-06 00:10:00,335 INFO L78 Accepts]: Start accepts. Automaton has 44041 states and 170008 transitions. Word has length 30 [2021-06-06 00:10:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:00,335 INFO L482 AbstractCegarLoop]: Abstraction has 44041 states and 170008 transitions. [2021-06-06 00:10:00,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 44041 states and 170008 transitions. [2021-06-06 00:10:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:10:00,418 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:00,419 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:00,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4603,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:00,634 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1938529707, now seen corresponding path program 174 times [2021-06-06 00:10:00,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:00,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927196839] [2021-06-06 00:10:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:00,835 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2021-06-06 00:10:01,034 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-06-06 00:10:01,227 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2021-06-06 00:10:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:01,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:01,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927196839] [2021-06-06 00:10:01,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927196839] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:01,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361331608] [2021-06-06 00:10:01,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:01,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:10:01,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:01,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:10:01,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:01,738 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-06 00:10:01,923 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-06 00:10:02,588 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:10:03,753 WARN L205 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 138 [2021-06-06 00:10:04,434 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 99 [2021-06-06 00:10:04,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:04,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:10:04,558 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:10:04,567 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,045 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2021-06-06 00:10:05,045 INFO L628 ElimStorePlain]: treesize reduction 134, result has 68.8 percent of original size [2021-06-06 00:10:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:10:05,053 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,183 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:10:05,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:05,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:05,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:10:05,191 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,306 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:10:05,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:05,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:05,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:10:05,314 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,418 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:10:05,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:05,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:10:05,426 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,517 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:05,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:05,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:05,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:10:05,528 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:10:05,535 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,655 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-06 00:10:05,655 INFO L628 ElimStorePlain]: treesize reduction 16, result has 89.9 percent of original size [2021-06-06 00:10:05,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:05,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:10:05,695 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:05,752 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:10:05,752 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 21 variables, input treesize:502, output treesize:39 [2021-06-06 00:10:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:05,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361331608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:05,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:05,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:10:05,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364257316] [2021-06-06 00:10:05,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:10:05,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:10:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:10:05,798 INFO L87 Difference]: Start difference. First operand 44041 states and 170008 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:06,260 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2021-06-06 00:10:06,618 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-06-06 00:10:06,914 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-06 00:10:07,090 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2021-06-06 00:10:07,287 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2021-06-06 00:10:07,533 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 58 [2021-06-06 00:10:07,698 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2021-06-06 00:10:08,376 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-06-06 00:10:09,056 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2021-06-06 00:10:09,239 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-06-06 00:10:10,333 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 156 DAG size of output: 128 [2021-06-06 00:10:11,374 WARN L205 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 129 [2021-06-06 00:10:11,524 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-06 00:10:12,190 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-06-06 00:10:13,401 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 164 DAG size of output: 127 [2021-06-06 00:10:14,605 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 160 DAG size of output: 126 [2021-06-06 00:10:14,912 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2021-06-06 00:10:15,098 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2021-06-06 00:10:15,421 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:10:16,210 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2021-06-06 00:10:16,400 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-06-06 00:10:16,787 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-06 00:10:17,020 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2021-06-06 00:10:17,910 WARN L205 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 126 [2021-06-06 00:10:18,145 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-06-06 00:10:18,358 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2021-06-06 00:10:18,573 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2021-06-06 00:10:18,759 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2021-06-06 00:10:19,015 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2021-06-06 00:10:19,231 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2021-06-06 00:10:19,438 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2021-06-06 00:10:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:19,639 INFO L93 Difference]: Finished difference Result 57596 states and 215241 transitions. [2021-06-06 00:10:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:10:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:10:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:19,885 INFO L225 Difference]: With dead ends: 57596 [2021-06-06 00:10:19,885 INFO L226 Difference]: Without dead ends: 57461 [2021-06-06 00:10:19,885 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 15450.3ms TimeCoverageRelationStatistics Valid=682, Invalid=2858, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:10:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57461 states. [2021-06-06 00:10:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57461 to 44285. [2021-06-06 00:10:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44285 states, 44284 states have (on average 3.85920422726041) internal successors, (170901), 44284 states have internal predecessors, (170901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44285 states to 44285 states and 170901 transitions. [2021-06-06 00:10:20,839 INFO L78 Accepts]: Start accepts. Automaton has 44285 states and 170901 transitions. Word has length 30 [2021-06-06 00:10:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:20,840 INFO L482 AbstractCegarLoop]: Abstraction has 44285 states and 170901 transitions. [2021-06-06 00:10:20,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 44285 states and 170901 transitions. [2021-06-06 00:10:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:10:20,908 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:20,908 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:21,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4627 [2021-06-06 00:10:21,109 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash -806056025, now seen corresponding path program 175 times [2021-06-06 00:10:21,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:21,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230484670] [2021-06-06 00:10:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:21,453 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-06-06 00:10:21,744 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-06 00:10:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:21,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:21,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230484670] [2021-06-06 00:10:21,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230484670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:21,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689568292] [2021-06-06 00:10:21,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 00:10:21,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:23,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:23,654 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:23,667 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:23,681 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-06 00:10:23,694 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-06-06 00:10:23,709 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:23,723 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:23,739 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:23,754 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 22 [2021-06-06 00:10:23,770 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-06 00:10:23,785 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-06-06 00:10:23,799 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:10:23,814 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:23,829 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:23,843 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:23,859 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:23,876 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:10:23,893 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:10:23,909 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:23,927 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:10:23,944 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:10:23,962 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:10:23,979 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:23,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:23,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:10:23,996 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:10:24,013 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 19 [2021-06-06 00:10:24,031 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:24,048 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:10:24,066 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-06-06 00:10:24,083 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:10:24,103 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:24,118 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:24,146 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:24,162 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:10:24,181 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:24,198 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:10:24,213 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-06 00:10:24,228 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:24,242 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:24,257 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:10:24,271 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:10:24,285 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:24,305 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:10:24,322 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:24,339 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-06 00:10:24,356 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:24,371 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-06-06 00:10:24,384 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-06 00:10:24,398 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:24,412 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:24,425 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 22 [2021-06-06 00:10:24,438 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:10:24,452 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:10:24,465 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:10:24,478 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 19 [2021-06-06 00:10:24,491 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:24,503 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:10:24,516 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:10:24,529 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:24,541 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:24,557 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:10:24,571 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:10:24,582 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:24,592 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:24,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:24,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:24,598 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,626 INFO L628 ElimStorePlain]: treesize reduction 103, result has 16.9 percent of original size [2021-06-06 00:10:24,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:10:24,627 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3424, output treesize:15 [2021-06-06 00:10:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:24,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689568292] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:24,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:24,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-06 00:10:24,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318630892] [2021-06-06 00:10:24,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:10:24,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:10:24,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:10:24,657 INFO L87 Difference]: Start difference. First operand 44285 states and 170901 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:25,618 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-06-06 00:10:25,998 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-06-06 00:10:26,431 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-06-06 00:10:26,974 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2021-06-06 00:10:27,236 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2021-06-06 00:10:27,580 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2021-06-06 00:10:28,134 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2021-06-06 00:10:28,496 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 84 [2021-06-06 00:10:28,680 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-06-06 00:10:28,972 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-06-06 00:10:29,203 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-06-06 00:10:29,470 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2021-06-06 00:10:29,725 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-06 00:10:30,187 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-06-06 00:10:30,665 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-06-06 00:10:30,958 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-06-06 00:10:31,754 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-06-06 00:10:31,918 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2021-06-06 00:10:32,477 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-06-06 00:10:32,704 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-06-06 00:10:32,827 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-06-06 00:10:33,047 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-06-06 00:10:33,340 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-06 00:10:33,604 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-06-06 00:10:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:33,960 INFO L93 Difference]: Finished difference Result 63426 states and 236013 transitions. [2021-06-06 00:10:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-06 00:10:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:10:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:34,111 INFO L225 Difference]: With dead ends: 63426 [2021-06-06 00:10:34,111 INFO L226 Difference]: Without dead ends: 63396 [2021-06-06 00:10:34,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 8979.7ms TimeCoverageRelationStatistics Valid=936, Invalid=5870, Unknown=0, NotChecked=0, Total=6806 [2021-06-06 00:10:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63396 states. [2021-06-06 00:10:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63396 to 44329. [2021-06-06 00:10:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44329 states, 44328 states have (on average 3.859389099440534) internal successors, (171079), 44328 states have internal predecessors, (171079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44329 states to 44329 states and 171079 transitions. [2021-06-06 00:10:35,213 INFO L78 Accepts]: Start accepts. Automaton has 44329 states and 171079 transitions. Word has length 30 [2021-06-06 00:10:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:35,213 INFO L482 AbstractCegarLoop]: Abstraction has 44329 states and 171079 transitions. [2021-06-06 00:10:35,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 44329 states and 171079 transitions. [2021-06-06 00:10:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:10:35,283 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:35,283 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:35,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4656,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:35,483 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:35,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1782374869, now seen corresponding path program 176 times [2021-06-06 00:10:35,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:35,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997432262] [2021-06-06 00:10:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:35,795 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-06 00:10:35,909 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-06-06 00:10:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:36,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:36,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997432262] [2021-06-06 00:10:36,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997432262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:36,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128255559] [2021-06-06 00:10:36,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:36,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:10:36,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:36,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:10:36,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:36,729 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-06-06 00:10:36,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,788 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:36,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:36,789 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,822 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:10:36,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 33 [2021-06-06 00:10:36,823 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,861 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-06 00:10:36,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2021-06-06 00:10:36,866 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,892 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:36,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:36,894 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,921 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:36,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:36,922 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,961 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:10:36,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2021-06-06 00:10:36,965 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,989 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:36,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:36,991 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,015 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:37,015 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,046 INFO L354 Elim1Store]: treesize reduction 23, result has 14.8 percent of original size [2021-06-06 00:10:37,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 29 [2021-06-06 00:10:37,047 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,081 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-06 00:10:37,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31 [2021-06-06 00:10:37,082 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,108 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-06 00:10:37,109 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,132 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:37,133 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,171 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:10:37,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:10:37,175 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,203 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:37,203 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,232 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:37,232 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,261 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:37,262 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,290 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:37,291 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,320 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:37,321 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,349 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:10:37,350 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,377 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:37,378 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,404 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:37,405 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,432 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 1 [2021-06-06 00:10:37,432 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,468 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:37,468 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,494 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:37,494 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,519 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:37,521 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,545 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:37,545 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,571 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:37,572 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,614 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:37,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 42 [2021-06-06 00:10:37,621 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,659 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:10:37,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 30 [2021-06-06 00:10:37,661 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,688 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:10:37,689 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,716 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-06 00:10:37,717 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,741 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:37,741 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,769 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-06 00:10:37,770 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,806 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:10:37,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2021-06-06 00:10:37,808 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,835 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:10:37,837 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,863 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:37,864 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,890 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-06 00:10:37,891 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,919 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:37,919 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,945 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:10:37,946 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,972 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:37,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:37,974 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:37,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:37,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,002 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:38,003 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,028 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:38,028 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,055 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:10:38,056 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,082 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:38,083 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,118 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:10:38,119 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,147 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:38,148 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,176 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:38,177 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,204 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-06 00:10:38,205 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,235 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-06 00:10:38,236 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,270 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:10:38,272 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,299 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:10:38,300 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,327 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:10:38,328 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,354 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:10:38,354 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,382 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:38,383 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,409 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:38,410 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,433 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:10:38,434 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,459 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:38,460 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,486 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 1 [2021-06-06 00:10:38,487 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,509 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:10:38,510 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,534 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:10:38,535 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,558 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-06 00:10:38,558 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,581 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:10:38,582 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,606 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 1 [2021-06-06 00:10:38,606 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:38,617 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:38,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-06 00:10:38,618 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:38,701 INFO L628 ElimStorePlain]: treesize reduction 123, result has 39.7 percent of original size [2021-06-06 00:10:38,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:10:38,702 INFO L247 ElimStorePlain]: Needed 65 recursive calls to eliminate 1 variables, input treesize:3409, output treesize:81 [2021-06-06 00:10:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:38,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128255559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:38,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:38,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-06 00:10:38,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137341439] [2021-06-06 00:10:38,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:10:38,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:38,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:10:38,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:10:38,813 INFO L87 Difference]: Start difference. First operand 44329 states and 171079 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:40,143 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-06-06 00:10:40,643 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-06-06 00:10:41,295 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-06-06 00:10:41,989 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2021-06-06 00:10:42,229 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-06-06 00:10:42,536 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-06-06 00:10:42,724 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-06 00:10:42,927 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2021-06-06 00:10:43,276 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-06 00:10:43,592 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2021-06-06 00:10:43,919 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2021-06-06 00:10:44,628 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2021-06-06 00:10:45,037 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-06-06 00:10:45,404 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2021-06-06 00:10:45,662 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-06-06 00:10:45,993 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-06-06 00:10:46,201 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-06-06 00:10:46,469 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2021-06-06 00:10:46,721 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2021-06-06 00:10:46,954 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2021-06-06 00:10:47,514 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2021-06-06 00:10:47,776 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2021-06-06 00:10:48,217 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 104 [2021-06-06 00:10:48,567 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2021-06-06 00:10:48,779 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-06-06 00:10:49,130 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2021-06-06 00:10:49,429 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2021-06-06 00:10:49,586 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-06 00:10:49,757 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-06 00:10:49,984 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-06-06 00:10:50,344 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-06-06 00:10:50,736 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2021-06-06 00:10:51,044 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-06 00:10:51,512 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2021-06-06 00:10:52,029 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 112 [2021-06-06 00:10:52,215 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-06-06 00:10:52,402 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2021-06-06 00:10:52,616 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-06-06 00:10:52,961 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2021-06-06 00:10:53,445 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2021-06-06 00:10:53,686 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-06-06 00:10:54,045 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2021-06-06 00:10:54,237 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-06-06 00:10:54,435 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:10:54,793 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2021-06-06 00:10:55,439 WARN L205 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2021-06-06 00:10:55,760 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2021-06-06 00:10:56,232 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2021-06-06 00:10:56,397 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-06-06 00:10:56,959 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2021-06-06 00:10:57,363 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2021-06-06 00:10:57,603 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2021-06-06 00:10:58,110 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2021-06-06 00:10:58,294 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:10:58,741 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2021-06-06 00:10:59,128 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2021-06-06 00:10:59,448 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2021-06-06 00:10:59,877 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2021-06-06 00:11:00,708 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2021-06-06 00:11:01,151 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-06-06 00:11:01,706 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-06-06 00:11:02,060 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2021-06-06 00:11:02,294 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-06 00:11:02,416 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2021-06-06 00:11:02,628 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:11:02,808 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 51 [2021-06-06 00:11:03,393 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2021-06-06 00:11:03,725 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-06-06 00:11:04,165 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 58 [2021-06-06 00:11:04,395 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2021-06-06 00:11:04,676 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2021-06-06 00:11:04,886 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2021-06-06 00:11:05,129 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2021-06-06 00:11:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:05,444 INFO L93 Difference]: Finished difference Result 77166 states and 282626 transitions. [2021-06-06 00:11:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-06-06 00:11:05,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-06 00:11:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:05,635 INFO L225 Difference]: With dead ends: 77166 [2021-06-06 00:11:05,636 INFO L226 Difference]: Without dead ends: 77094 [2021-06-06 00:11:05,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7346 ImplicationChecksByTransitivity, 24211.7ms TimeCoverageRelationStatistics Valid=1751, Invalid=17989, Unknown=0, NotChecked=0, Total=19740 [2021-06-06 00:11:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77094 states. [2021-06-06 00:11:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77094 to 44685. [2021-06-06 00:11:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44685 states, 44684 states have (on average 3.860375078327813) internal successors, (172497), 44684 states have internal predecessors, (172497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44685 states to 44685 states and 172497 transitions. [2021-06-06 00:11:07,135 INFO L78 Accepts]: Start accepts. Automaton has 44685 states and 172497 transitions. Word has length 30 [2021-06-06 00:11:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:07,135 INFO L482 AbstractCegarLoop]: Abstraction has 44685 states and 172497 transitions. [2021-06-06 00:11:07,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 44685 states and 172497 transitions. [2021-06-06 00:11:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:11:07,214 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:07,214 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:07,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5012 [2021-06-06 00:11:07,417 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1460513255, now seen corresponding path program 177 times [2021-06-06 00:11:07,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:07,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595618455] [2021-06-06 00:11:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:07,801 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-06-06 00:11:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:08,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:08,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595618455] [2021-06-06 00:11:08,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595618455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:08,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312529905] [2021-06-06 00:11:08,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:08,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:11:08,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:08,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:11:08,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:22,613 WARN L205 SmtUtils]: Spent 13.91 s on a formula simplification that was a NOOP. DAG size: 93 [2021-06-06 00:11:22,800 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2021-06-06 00:11:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:23,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:23,354 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:11:23,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 39 [2021-06-06 00:11:23,356 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:23,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:23,481 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-06 00:11:23,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 45 [2021-06-06 00:11:23,484 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,114 WARN L205 SmtUtils]: Spent 5.63 s on a formula simplification. DAG size of input: 706 DAG size of output: 656 [2021-06-06 00:11:29,116 INFO L628 ElimStorePlain]: treesize reduction 979, result has 72.0 percent of original size [2021-06-06 00:11:29,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,257 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:11:29,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 36 [2021-06-06 00:11:29,259 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,385 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:11:29,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 54 [2021-06-06 00:11:29,392 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:33,737 WARN L205 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 653 DAG size of output: 651 [2021-06-06 00:11:33,738 INFO L628 ElimStorePlain]: treesize reduction 33, result has 98.7 percent of original size [2021-06-06 00:11:33,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:33,919 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:11:33,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 54 [2021-06-06 00:11:33,924 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:33,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:33,988 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:11:33,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:11:33,989 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,135 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 644 [2021-06-06 00:11:36,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,263 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 66 [2021-06-06 00:11:36,284 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,356 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:11:36,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:11:36,357 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:40,433 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 633 DAG size of output: 632 [2021-06-06 00:11:40,434 INFO L628 ElimStorePlain]: treesize reduction 21, result has 99.1 percent of original size [2021-06-06 00:11:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:40,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:40,517 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:40,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 60 [2021-06-06 00:11:40,527 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:42,452 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 620 [2021-06-06 00:11:42,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:42,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:42,546 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-06 00:11:42,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:11:42,550 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,489 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 611 [2021-06-06 00:11:44,490 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,579 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:11:44,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-06 00:11:44,581 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:46,526 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 603 [2021-06-06 00:11:46,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:46,620 INFO L354 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2021-06-06 00:11:46,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 31 [2021-06-06 00:11:46,622 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:48,609 WARN L205 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 596 [2021-06-06 00:11:48,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:48,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:48,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:48,706 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:11:48,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 50 [2021-06-06 00:11:48,710 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:52,423 WARN L205 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 593 DAG size of output: 591 [2021-06-06 00:11:52,425 INFO L628 ElimStorePlain]: treesize reduction 13, result has 99.4 percent of original size [2021-06-06 00:11:52,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,509 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:11:52,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-06 00:11:52,511 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,354 WARN L205 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 582 [2021-06-06 00:11:54,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:54,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,443 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-06 00:11:54,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 42 [2021-06-06 00:11:54,447 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,179 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 572 [2021-06-06 00:11:56,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:56,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,288 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:56,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 69 [2021-06-06 00:11:56,303 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,360 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:11:56,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 1 [2021-06-06 00:11:56,361 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,894 WARN L205 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 571 DAG size of output: 568 [2021-06-06 00:11:59,895 INFO L628 ElimStorePlain]: treesize reduction 32, result has 98.5 percent of original size [2021-06-06 00:11:59,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,973 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-06 00:11:59,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 38 [2021-06-06 00:11:59,974 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:01,708 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 560 [2021-06-06 00:12:01,709 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:01,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:01,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:01,807 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:12:01,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 50 [2021-06-06 00:12:01,814 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,484 WARN L205 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 550 [2021-06-06 00:12:03,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:03,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,571 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-06 00:12:03,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 39 [2021-06-06 00:12:03,575 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:05,191 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 541 [2021-06-06 00:12:05,192 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:05,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:05,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:05,274 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:12:05,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-06 00:12:05,276 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:06,948 WARN L205 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 533 [2021-06-06 00:12:06,949 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:07,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:07,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:07,066 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-06 00:12:07,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 35 [2021-06-06 00:12:07,069 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,687 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 526 [2021-06-06 00:12:08,687 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,759 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:12:08,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-06 00:12:08,761 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:10,405 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 518 [2021-06-06 00:12:10,406 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:10,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:10,498 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:12:10,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 36 [2021-06-06 00:12:10,499 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:10,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:10,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:10,576 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-06 00:12:10,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 40 [2021-06-06 00:12:10,580 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. Received shutdown request... [2021-06-06 00:12:13,270 WARN L222 SmtUtils]: Removed 14 from assertion stack [2021-06-06 00:12:13,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 258 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5079 [2021-06-06 00:12:13,471 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-06 00:12:13,472 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 00:12:13,473 WARN L196 ceAbstractionStarter]: Timeout [2021-06-06 00:12:13,474 INFO L202 PluginConnector]: Adding new model max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 12:12:13 BasicIcfg [2021-06-06 00:12:13,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 00:12:13,474 INFO L168 Benchmark]: Toolchain (without parser) took 810617.68 ms. Allocated memory was 379.6 MB in the beginning and 15.5 GB in the end (delta: 15.1 GB). Free memory was 358.7 MB in the beginning and 12.2 GB in the end (delta: -11.8 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. [2021-06-06 00:12:13,474 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 379.6 MB. Free memory is still 359.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:12:13,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 379.6 MB. Free memory was 358.6 MB in the beginning and 357.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:12:13,474 INFO L168 Benchmark]: Boogie Preprocessor took 17.81 ms. Allocated memory is still 379.6 MB. Free memory was 357.2 MB in the beginning and 356.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 00:12:13,474 INFO L168 Benchmark]: RCFGBuilder took 241.36 ms. Allocated memory is still 379.6 MB. Free memory was 356.2 MB in the beginning and 342.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-06 00:12:13,474 INFO L168 Benchmark]: TraceAbstraction took 810333.30 ms. Allocated memory was 379.6 MB in the beginning and 15.5 GB in the end (delta: 15.1 GB). Free memory was 342.2 MB in the beginning and 12.2 GB in the end (delta: -11.8 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. [2021-06-06 00:12:13,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 379.6 MB. Free memory is still 359.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 379.6 MB. Free memory was 358.6 MB in the beginning and 357.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.81 ms. Allocated memory is still 379.6 MB. Free memory was 357.2 MB in the beginning and 356.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 241.36 ms. Allocated memory is still 379.6 MB. Free memory was 356.2 MB in the beginning and 342.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 810333.30 ms. Allocated memory was 379.6 MB in the beginning and 15.5 GB in the end (delta: 15.1 GB). Free memory was 342.2 MB in the beginning and 12.2 GB in the end (delta: -11.8 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 510 for 2688ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 810211.0ms, OverallIterations: 260, TraceHistogramMax: 3, EmptinessCheckTime: 5378.8ms, AutomataDifference: 416602.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11965 SDtfs, 75033 SDslu, 93061 SDs, 0 SdLazy, 150238 SolverSat, 13644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81269.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17058 GetRequests, 5447 SyntacticMatches, 250 SemanticMatches, 11361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202224 ImplicationChecksByTransitivity, 355098.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48550occurred in iteration=248, InterpolantAutomatonStates: 10128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83653.3ms AutomataMinimizationTime, 259 MinimizatonAttempts, 1385975 StatesRemovedByMinimization, 259 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 760.5ms SsaConstructionTime, 2450.6ms SatisfiabilityAnalysisTime, 178286.2ms InterpolantComputationTime, 13778 NumberOfCodeBlocks, 13778 NumberOfCodeBlocksAsserted, 894 NumberOfCheckSat, 13263 ConstructedInterpolants, 193 QuantifiedInterpolants, 218504 SizeOfPredicates, 1049 NumberOfNonLiveVariables, 17406 ConjunctsInSsa, 3745 ConjunctsInUnsatCore, 515 InterpolantComputations, 3 PerfectInterpolantSequences, 1001/4406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown