/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-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 23:33:10,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 23:33:10,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 23:33:10,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 23:33:10,301 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 [2021-03-10 23:33:10,320 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 23:33:10,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 23:33:10,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 23:33:10,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 23:33:10,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 23:33:10,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 23:33:10,323 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 23:33:10,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 23:33:10,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 23:33:10,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 23:33:10,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 23:33:10,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 23:33:10,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 23:33:10,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 23:33:10,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 23:33:10,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 23:33:10,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 23:33:10,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 23:33:10,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 23:33:10,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 23:33:10,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 23:33:10,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 23:33:10,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 23:33:10,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 23:33:10,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 23:33:10,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 23:33:10,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 23:33:10,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 23:33:10,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 23:33:10,328 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 23:33:10,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 23:33:10,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 23:33:10,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 23:33:10,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 23:33:10,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 23:33:10,736 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 23:33:10,738 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 23:33:10,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2021-03-10 23:33:10,740 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-03-10 23:33:10,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 23:33:10,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 23:33:10,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 23:33:10,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 23:33:10,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 23:33:10,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 23:33:10,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 23:33:10,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 23:33:10,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 23:33:10,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/1) ... [2021-03-10 23:33:10,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 23:33:10,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 23:33:10,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 23:33:10,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 23:33:10,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (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 [2021-03-10 23:33:10,938 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 23:33:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 23:33:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 23:33:10,939 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 23:33:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 23:33:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 23:33:10,939 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 23:33:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 23:33:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 23:33:10,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 23:33:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 23:33:10,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 23:33:10,943 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 23:33:11,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 23:33:11,273 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 23:33:11,275 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 11:33:11 BoogieIcfgContainer [2021-03-10 23:33:11,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 23:33:11,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 23:33:11,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 23:33:11,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 23:33:11,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 11:33:10" (1/2) ... [2021-03-10 23:33:11,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c74a83 and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 11:33:11, skipping insertion in model container [2021-03-10 23:33:11,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 11:33:11" (2/2) ... [2021-03-10 23:33:11,282 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-03-10 23:33:11,287 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 23:33:11,287 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 23:33:11,290 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 23:33:11,291 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 23:33:11,323 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-10 23:33:11,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 23:33:11,356 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 23:33:11,356 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 23:33:11,356 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 23:33:11,356 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 23:33:11,356 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 23:33:11,356 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 23:33:11,356 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 23:33:11,356 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 23:33:11,365 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2021-03-10 23:33:11,418 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 23:33:11,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:11,440 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:11,440 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash -766477116, now seen corresponding path program 1 times [2021-03-10 23:33:11,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:11,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132702807] [2021-03-10 23:33:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:11,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132702807] [2021-03-10 23:33:11,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 23:33:11,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 23:33:11,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452281870] [2021-03-10 23:33:11,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 23:33:11,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:11,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 23:33:11,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:11,602 INFO L87 Difference]: Start difference. First operand has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:11,656 INFO L93 Difference]: Finished difference Result 393 states and 1157 transitions. [2021-03-10 23:33:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 23:33:11,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 23:33:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:11,680 INFO L225 Difference]: With dead ends: 393 [2021-03-10 23:33:11,680 INFO L226 Difference]: Without dead ends: 393 [2021-03-10 23:33:11,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-03-10 23:33:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-03-10 23:33:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.951530612244898) internal successors, (1157), 392 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1157 transitions. [2021-03-10 23:33:11,775 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1157 transitions. Word has length 16 [2021-03-10 23:33:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:11,775 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1157 transitions. [2021-03-10 23:33:11,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1157 transitions. [2021-03-10 23:33:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-03-10 23:33:11,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:11,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:11,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 23:33:11,779 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1760185073, now seen corresponding path program 1 times [2021-03-10 23:33:11,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:11,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229729247] [2021-03-10 23:33:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:11,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229729247] [2021-03-10 23:33:11,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 23:33:11,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 23:33:11,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415431797] [2021-03-10 23:33:11,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 23:33:11,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:11,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 23:33:11,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:11,828 INFO L87 Difference]: Start difference. First operand 393 states and 1157 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:11,851 INFO L93 Difference]: Finished difference Result 442 states and 1303 transitions. [2021-03-10 23:33:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 23:33:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-03-10 23:33:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:11,856 INFO L225 Difference]: With dead ends: 442 [2021-03-10 23:33:11,856 INFO L226 Difference]: Without dead ends: 442 [2021-03-10 23:33:11,857 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-03-10 23:33:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-03-10 23:33:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.9546485260770976) internal successors, (1303), 441 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1303 transitions. [2021-03-10 23:33:11,881 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1303 transitions. Word has length 21 [2021-03-10 23:33:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:11,881 INFO L480 AbstractCegarLoop]: Abstraction has 442 states and 1303 transitions. [2021-03-10 23:33:11,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1303 transitions. [2021-03-10 23:33:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 23:33:11,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:11,884 INFO L519 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, 1, 1] [2021-03-10 23:33:11,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 23:33:11,884 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:11,886 INFO L82 PathProgramCache]: Analyzing trace with hash 992917241, now seen corresponding path program 1 times [2021-03-10 23:33:11,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:11,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130857275] [2021-03-10 23:33:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:11,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130857275] [2021-03-10 23:33:11,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 23:33:11,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 23:33:11,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141514885] [2021-03-10 23:33:11,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 23:33:11,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:11,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 23:33:11,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:11,965 INFO L87 Difference]: Start difference. First operand 442 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:11,999 INFO L93 Difference]: Finished difference Result 880 states and 2602 transitions. [2021-03-10 23:33:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 23:33:12,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 [2021-03-10 23:33:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:12,005 INFO L225 Difference]: With dead ends: 880 [2021-03-10 23:33:12,005 INFO L226 Difference]: Without dead ends: 588 [2021-03-10 23:33:12,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:12,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-10 23:33:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 515. [2021-03-10 23:33:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 2.9591439688715955) internal successors, (1521), 514 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1521 transitions. [2021-03-10 23:33:12,025 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1521 transitions. Word has length 26 [2021-03-10 23:33:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:12,025 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 1521 transitions. [2021-03-10 23:33:12,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1521 transitions. [2021-03-10 23:33:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 23:33:12,027 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:12,027 INFO L519 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, 1, 1, 1, 1] [2021-03-10 23:33:12,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 23:33:12,028 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -92913957, now seen corresponding path program 1 times [2021-03-10 23:33:12,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:12,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340326255] [2021-03-10 23:33:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:12,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340326255] [2021-03-10 23:33:12,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788057063] [2021-03-10 23:33:12,110 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 [2021-03-10 23:33:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:12,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 23:33:12,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:12,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:12,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-03-10 23:33:12,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254837190] [2021-03-10 23:33:12,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 23:33:12,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 23:33:12,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 23:33:12,358 INFO L87 Difference]: Start difference. First operand 515 states and 1521 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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) [2021-03-10 23:33:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:12,423 INFO L93 Difference]: Finished difference Result 1006 states and 2982 transitions. [2021-03-10 23:33:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 23:33:12,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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 28 [2021-03-10 23:33:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:12,430 INFO L225 Difference]: With dead ends: 1006 [2021-03-10 23:33:12,431 INFO L226 Difference]: Without dead ends: 648 [2021-03-10 23:33:12,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-03-10 23:33:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-10 23:33:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 470. [2021-03-10 23:33:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.9658848614072495) internal successors, (1391), 469 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1391 transitions. [2021-03-10 23:33:12,456 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1391 transitions. Word has length 28 [2021-03-10 23:33:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:12,456 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 1391 transitions. [2021-03-10 23:33:12,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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) [2021-03-10 23:33:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1391 transitions. [2021-03-10 23:33:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 23:33:12,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:12,459 INFO L519 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, 1, 1, 1, 1] [2021-03-10 23:33:12,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:12,675 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:12,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1822406947, now seen corresponding path program 2 times [2021-03-10 23:33:12,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:12,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621119807] [2021-03-10 23:33:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:33:12,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621119807] [2021-03-10 23:33:12,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 23:33:12,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 23:33:12,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979817482] [2021-03-10 23:33:12,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 23:33:12,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:12,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 23:33:12,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:12,707 INFO L87 Difference]: Start difference. First operand 470 states and 1391 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:12,720 INFO L93 Difference]: Finished difference Result 516 states and 1505 transitions. [2021-03-10 23:33:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 23:33:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have 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 [2021-03-10 23:33:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:12,731 INFO L225 Difference]: With dead ends: 516 [2021-03-10 23:33:12,731 INFO L226 Difference]: Without dead ends: 516 [2021-03-10 23:33:12,731 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-03-10 23:33:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2021-03-10 23:33:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.9223300970873787) internal successors, (1505), 515 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1505 transitions. [2021-03-10 23:33:12,767 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1505 transitions. Word has length 28 [2021-03-10 23:33:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:12,767 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 1505 transitions. [2021-03-10 23:33:12,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1505 transitions. [2021-03-10 23:33:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 23:33:12,770 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:12,770 INFO L519 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, 1, 1, 1, 1] [2021-03-10 23:33:12,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 23:33:12,770 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:12,771 INFO L82 PathProgramCache]: Analyzing trace with hash -121778885, now seen corresponding path program 3 times [2021-03-10 23:33:12,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:12,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043599214] [2021-03-10 23:33:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:12,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043599214] [2021-03-10 23:33:12,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 23:33:12,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 23:33:12,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711708079] [2021-03-10 23:33:12,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 23:33:12,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:12,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 23:33:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:12,860 INFO L87 Difference]: Start difference. First operand 516 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:12,880 INFO L93 Difference]: Finished difference Result 445 states and 1298 transitions. [2021-03-10 23:33:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 23:33:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have 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 [2021-03-10 23:33:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:12,884 INFO L225 Difference]: With dead ends: 445 [2021-03-10 23:33:12,884 INFO L226 Difference]: Without dead ends: 445 [2021-03-10 23:33:12,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 23:33:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-03-10 23:33:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-03-10 23:33:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.9234234234234235) internal successors, (1298), 444 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1298 transitions. [2021-03-10 23:33:12,900 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1298 transitions. Word has length 28 [2021-03-10 23:33:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:12,901 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 1298 transitions. [2021-03-10 23:33:12,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1298 transitions. [2021-03-10 23:33:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 23:33:12,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:12,903 INFO L519 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, 1, 1, 1, 1] [2021-03-10 23:33:12,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 23:33:12,903 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:12,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:12,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1629135297, now seen corresponding path program 4 times [2021-03-10 23:33:12,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:12,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914047340] [2021-03-10 23:33:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:33:12,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914047340] [2021-03-10 23:33:12,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255249506] [2021-03-10 23:33:12,949 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 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 [2021-03-10 23:33:12,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 23:33:12,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:12,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 23:33:12,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:13,167 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 7 treesize of output 3 [2021-03-10 23:33:13,170 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:13,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:13,189 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:33:13,190 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-03-10 23:33:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:33:13,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:13,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-03-10 23:33:13,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250772952] [2021-03-10 23:33:13,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 23:33:13,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 23:33:13,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-10 23:33:13,294 INFO L87 Difference]: Start difference. First operand 445 states and 1298 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:13,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:13,776 INFO L93 Difference]: Finished difference Result 1590 states and 4708 transitions. [2021-03-10 23:33:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 23:33:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have 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 [2021-03-10 23:33:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:13,785 INFO L225 Difference]: With dead ends: 1590 [2021-03-10 23:33:13,785 INFO L226 Difference]: Without dead ends: 1274 [2021-03-10 23:33:13,787 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 362.5ms TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-03-10 23:33:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-03-10 23:33:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 856. [2021-03-10 23:33:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 2.950877192982456) internal successors, (2523), 855 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2523 transitions. [2021-03-10 23:33:13,821 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2523 transitions. Word has length 30 [2021-03-10 23:33:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:13,823 INFO L480 AbstractCegarLoop]: Abstraction has 856 states and 2523 transitions. [2021-03-10 23:33:13,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2523 transitions. [2021-03-10 23:33:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-03-10 23:33:13,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:13,826 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:14,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:14,043 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:14,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash -142320356, now seen corresponding path program 5 times [2021-03-10 23:33:14,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:14,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644573737] [2021-03-10 23:33:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:14,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644573737] [2021-03-10 23:33:14,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027978085] [2021-03-10 23:33:14,164 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 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 [2021-03-10 23:33:14,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-03-10 23:33:14,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:14,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 23:33:14,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:14,293 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 15 treesize of output 7 [2021-03-10 23:33:14,297 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:14,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:14,303 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:14,304 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2021-03-10 23:33:14,353 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 11 treesize of output 7 [2021-03-10 23:33:14,355 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:14,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:14,357 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:14,357 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:33:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 23:33:14,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:14,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-03-10 23:33:14,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591956692] [2021-03-10 23:33:14,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 23:33:14,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 23:33:14,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 23:33:14,382 INFO L87 Difference]: Start difference. First operand 856 states and 2523 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2021-03-10 23:33:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:14,606 INFO L93 Difference]: Finished difference Result 1232 states and 3647 transitions. [2021-03-10 23:33:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 23:33:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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 37 [2021-03-10 23:33:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:14,614 INFO L225 Difference]: With dead ends: 1232 [2021-03-10 23:33:14,614 INFO L226 Difference]: Without dead ends: 1232 [2021-03-10 23:33:14,614 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-03-10 23:33:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-03-10 23:33:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1129. [2021-03-10 23:33:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 2.9601063829787235) internal successors, (3339), 1128 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 3339 transitions. [2021-03-10 23:33:14,648 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 3339 transitions. Word has length 37 [2021-03-10 23:33:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:14,650 INFO L480 AbstractCegarLoop]: Abstraction has 1129 states and 3339 transitions. [2021-03-10 23:33:14,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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) [2021-03-10 23:33:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 3339 transitions. [2021-03-10 23:33:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 23:33:14,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:14,653 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:14,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-10 23:33:14,867 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:14,867 INFO L82 PathProgramCache]: Analyzing trace with hash 403158122, now seen corresponding path program 6 times [2021-03-10 23:33:14,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:14,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14833593] [2021-03-10 23:33:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:15,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14833593] [2021-03-10 23:33:15,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165288690] [2021-03-10 23:33:15,030 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 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 [2021-03-10 23:33:15,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-03-10 23:33:15,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:15,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 23:33:15,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:15,308 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 7 treesize of output 3 [2021-03-10 23:33:15,310 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:15,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:15,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:33:15,321 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-03-10 23:33:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:33:15,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:15,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-03-10 23:33:15,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253158317] [2021-03-10 23:33:15,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 23:33:15,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:15,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 23:33:15,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-03-10 23:33:15,379 INFO L87 Difference]: Start difference. First operand 1129 states and 3339 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:15,657 INFO L93 Difference]: Finished difference Result 2941 states and 8735 transitions. [2021-03-10 23:33:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 23:33:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-03-10 23:33:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:15,670 INFO L225 Difference]: With dead ends: 2941 [2021-03-10 23:33:15,670 INFO L226 Difference]: Without dead ends: 2239 [2021-03-10 23:33:15,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 280.4ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-03-10 23:33:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2021-03-10 23:33:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1599. [2021-03-10 23:33:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 2.9981226533166456) internal successors, (4791), 1598 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 4791 transitions. [2021-03-10 23:33:15,729 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 4791 transitions. Word has length 42 [2021-03-10 23:33:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:15,729 INFO L480 AbstractCegarLoop]: Abstraction has 1599 states and 4791 transitions. [2021-03-10 23:33:15,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:15,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 4791 transitions. [2021-03-10 23:33:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 23:33:15,735 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:15,735 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:15,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:15,958 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1644121514, now seen corresponding path program 7 times [2021-03-10 23:33:15,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:15,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708717360] [2021-03-10 23:33:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:33:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708717360] [2021-03-10 23:33:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176396487] [2021-03-10 23:33:16,014 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 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 [2021-03-10 23:33:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:16,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-10 23:33:16,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:16,087 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 7 treesize of output 3 [2021-03-10 23:33:16,089 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:16,090 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:16,091 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:16,091 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:5 [2021-03-10 23:33:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:33:16,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:16,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-03-10 23:33:16,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938694244] [2021-03-10 23:33:16,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 23:33:16,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:16,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 23:33:16,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-10 23:33:16,167 INFO L87 Difference]: Start difference. First operand 1599 states and 4791 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 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) [2021-03-10 23:33:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:16,203 INFO L93 Difference]: Finished difference Result 2923 states and 8545 transitions. [2021-03-10 23:33:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 23:33:16,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 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 42 [2021-03-10 23:33:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:16,221 INFO L225 Difference]: With dead ends: 2923 [2021-03-10 23:33:16,222 INFO L226 Difference]: Without dead ends: 2893 [2021-03-10 23:33:16,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-10 23:33:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-03-10 23:33:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2309. [2021-03-10 23:33:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 3.0108318890814556) internal successors, (6949), 2308 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 6949 transitions. [2021-03-10 23:33:16,313 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 6949 transitions. Word has length 42 [2021-03-10 23:33:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:16,313 INFO L480 AbstractCegarLoop]: Abstraction has 2309 states and 6949 transitions. [2021-03-10 23:33:16,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 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) [2021-03-10 23:33:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 6949 transitions. [2021-03-10 23:33:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 23:33:16,322 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:16,322 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:16,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-10 23:33:16,547 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash -337432434, now seen corresponding path program 8 times [2021-03-10 23:33:16,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:16,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585067703] [2021-03-10 23:33:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:16,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585067703] [2021-03-10 23:33:16,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622378223] [2021-03-10 23:33:16,860 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 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 [2021-03-10 23:33:16,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 23:33:16,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:16,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 23:33:16,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:17,165 INFO L446 ElimStorePlain]: Different costs {0=[q3, v_prenex_3], 1=[v_prenex_1]} [2021-03-10 23:33:17,171 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 7 treesize of output 3 [2021-03-10 23:33:17,173 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:17,232 INFO L628 ElimStorePlain]: treesize reduction 24, result has 75.5 percent of original size [2021-03-10 23:33:17,233 INFO L518 ElimStorePlain]: Eliminatee v_prenex_3 vanished before elimination [2021-03-10 23:33:17,239 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:17,240 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 5 [2021-03-10 23:33:17,243 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:17,268 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:17,272 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:33:17,272 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:105, output treesize:63 [2021-03-10 23:33:17,378 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:17,379 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 18 treesize of output 10 [2021-03-10 23:33:17,383 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:17,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:17,384 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:17,385 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-03-10 23:33:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:33:17,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:17,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2021-03-10 23:33:17,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872528853] [2021-03-10 23:33:17,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 23:33:17,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 23:33:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-03-10 23:33:17,442 INFO L87 Difference]: Start difference. First operand 2309 states and 6949 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:24,150 INFO L93 Difference]: Finished difference Result 9995 states and 29796 transitions. [2021-03-10 23:33:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-03-10 23:33:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-03-10 23:33:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:24,214 INFO L225 Difference]: With dead ends: 9995 [2021-03-10 23:33:24,214 INFO L226 Difference]: Without dead ends: 8302 [2021-03-10 23:33:24,220 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 5525.7ms TimeCoverageRelationStatistics Valid=4313, Invalid=17739, Unknown=0, NotChecked=0, Total=22052 [2021-03-10 23:33:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8302 states. [2021-03-10 23:33:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8302 to 4152. [2021-03-10 23:33:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 3.0320404721753795) internal successors, (12586), 4151 states have internal predecessors, (12586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 12586 transitions. [2021-03-10 23:33:24,398 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 12586 transitions. Word has length 42 [2021-03-10 23:33:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:24,400 INFO L480 AbstractCegarLoop]: Abstraction has 4152 states and 12586 transitions. [2021-03-10 23:33:24,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 12586 transitions. [2021-03-10 23:33:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 23:33:24,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:24,410 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:24,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:24,623 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1703826358, now seen corresponding path program 9 times [2021-03-10 23:33:24,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:24,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930548328] [2021-03-10 23:33:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:24,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930548328] [2021-03-10 23:33:24,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217389832] [2021-03-10 23:33:24,912 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 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 [2021-03-10 23:33:24,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-03-10 23:33:24,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:24,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 23:33:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:25,172 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_8, q3], 1=[v_prenex_6]} [2021-03-10 23:33:25,176 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 7 treesize of output 3 [2021-03-10 23:33:25,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:25,232 INFO L628 ElimStorePlain]: treesize reduction 24, result has 75.5 percent of original size [2021-03-10 23:33:25,233 INFO L518 ElimStorePlain]: Eliminatee q3 vanished before elimination [2021-03-10 23:33:25,239 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:25,239 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 5 [2021-03-10 23:33:25,240 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:25,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:25,267 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:33:25,267 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:105, output treesize:63 [2021-03-10 23:33:25,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:25,336 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 [2021-03-10 23:33:25,339 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:25,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:25,347 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 25 treesize of output 13 [2021-03-10 23:33:25,349 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:25,359 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:25,359 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 18 treesize of output 10 [2021-03-10 23:33:25,361 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:25,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:25,379 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:33:25,379 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:78, output treesize:31 [2021-03-10 23:33:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:33:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2021-03-10 23:33:25,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877318097] [2021-03-10 23:33:25,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 23:33:25,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 23:33:25,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-03-10 23:33:25,570 INFO L87 Difference]: Start difference. First operand 4152 states and 12586 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:28,729 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2021-03-10 23:33:29,695 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-03-10 23:33:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:35,156 INFO L93 Difference]: Finished difference Result 12274 states and 36181 transitions. [2021-03-10 23:33:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-03-10 23:33:35,157 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-03-10 23:33:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:35,201 INFO L225 Difference]: With dead ends: 12274 [2021-03-10 23:33:35,201 INFO L226 Difference]: Without dead ends: 10618 [2021-03-10 23:33:35,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14866 ImplicationChecksByTransitivity, 8534.6ms TimeCoverageRelationStatistics Valid=6263, Invalid=25957, Unknown=0, NotChecked=0, Total=32220 [2021-03-10 23:33:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2021-03-10 23:33:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 4255. [2021-03-10 23:33:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 4254 states have (on average 3.0554771979313586) internal successors, (12998), 4254 states have internal predecessors, (12998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:35,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 12998 transitions. [2021-03-10 23:33:35,469 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 12998 transitions. Word has length 42 [2021-03-10 23:33:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:35,469 INFO L480 AbstractCegarLoop]: Abstraction has 4255 states and 12998 transitions. [2021-03-10 23:33:35,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 12998 transitions. [2021-03-10 23:33:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 23:33:35,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:35,481 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:35,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:35,706 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:35,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1100727138, now seen corresponding path program 10 times [2021-03-10 23:33:35,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:35,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863410325] [2021-03-10 23:33:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:36,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863410325] [2021-03-10 23:33:36,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428934113] [2021-03-10 23:33:36,004 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 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 [2021-03-10 23:33:36,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 23:33:36,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:36,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 23:33:36,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:36,173 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 17 treesize of output 13 [2021-03-10 23:33:36,174 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,184 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:36,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,186 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:31 [2021-03-10 23:33:36,453 INFO L446 ElimStorePlain]: Different costs {0=[q3], 3=[q1]} [2021-03-10 23:33:36,456 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 17 treesize of output 9 [2021-03-10 23:33:36,457 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,461 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 17 treesize of output 9 [2021-03-10 23:33:36,461 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,465 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 9 treesize of output 5 [2021-03-10 23:33:36,466 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,518 INFO L628 ElimStorePlain]: treesize reduction 33, result has 69.2 percent of original size [2021-03-10 23:33:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:36,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 15 [2021-03-10 23:33:36,528 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,531 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:36,531 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 22 treesize of output 12 [2021-03-10 23:33:36,533 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:36,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:36,546 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:33:36,546 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:138, output treesize:31 [2021-03-10 23:33:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:36,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:36,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2021-03-10 23:33:36,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218793417] [2021-03-10 23:33:36,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 23:33:36,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:36,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 23:33:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-03-10 23:33:36,723 INFO L87 Difference]: Start difference. First operand 4255 states and 12998 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:38,184 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2021-03-10 23:33:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:41,166 INFO L93 Difference]: Finished difference Result 9416 states and 28361 transitions. [2021-03-10 23:33:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-10 23:33:41,167 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-03-10 23:33:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:41,193 INFO L225 Difference]: With dead ends: 9416 [2021-03-10 23:33:41,193 INFO L226 Difference]: Without dead ends: 7804 [2021-03-10 23:33:41,195 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 3829.4ms TimeCoverageRelationStatistics Valid=1179, Invalid=6831, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 23:33:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2021-03-10 23:33:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4572. [2021-03-10 23:33:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4571 states have (on average 3.077444760446292) internal successors, (14067), 4571 states have internal predecessors, (14067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 14067 transitions. [2021-03-10 23:33:41,398 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 14067 transitions. Word has length 42 [2021-03-10 23:33:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:41,398 INFO L480 AbstractCegarLoop]: Abstraction has 4572 states and 14067 transitions. [2021-03-10 23:33:41,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 14067 transitions. [2021-03-10 23:33:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 23:33:41,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:41,411 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:41,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-10 23:33:41,627 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash -115202370, now seen corresponding path program 11 times [2021-03-10 23:33:41,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:41,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690014379] [2021-03-10 23:33:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:41,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690014379] [2021-03-10 23:33:41,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743263558] [2021-03-10 23:33:41,906 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 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 [2021-03-10 23:33:41,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-03-10 23:33:41,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:41,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 23:33:41,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:42,155 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:42,156 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 18 treesize of output 10 [2021-03-10 23:33:42,157 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:42,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:42,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:42,159 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-03-10 23:33:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:33:42,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:42,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 21 [2021-03-10 23:33:42,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742353133] [2021-03-10 23:33:42,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 23:33:42,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 23:33:42,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-03-10 23:33:42,216 INFO L87 Difference]: Start difference. First operand 4572 states and 14067 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:46,127 INFO L93 Difference]: Finished difference Result 11132 states and 33734 transitions. [2021-03-10 23:33:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-03-10 23:33:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-03-10 23:33:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:46,153 INFO L225 Difference]: With dead ends: 11132 [2021-03-10 23:33:46,154 INFO L226 Difference]: Without dead ends: 9470 [2021-03-10 23:33:46,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4954 ImplicationChecksByTransitivity, 3182.5ms TimeCoverageRelationStatistics Valid=2495, Invalid=10615, Unknown=0, NotChecked=0, Total=13110 [2021-03-10 23:33:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2021-03-10 23:33:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 4773. [2021-03-10 23:33:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4772 states have (on average 3.02745180217938) internal successors, (14447), 4772 states have internal predecessors, (14447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 14447 transitions. [2021-03-10 23:33:46,334 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 14447 transitions. Word has length 42 [2021-03-10 23:33:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:46,335 INFO L480 AbstractCegarLoop]: Abstraction has 4773 states and 14447 transitions. [2021-03-10 23:33:46,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 14447 transitions. [2021-03-10 23:33:46,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 23:33:46,348 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:46,349 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:46,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:46,563 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:46,564 INFO L82 PathProgramCache]: Analyzing trace with hash 610965756, now seen corresponding path program 12 times [2021-03-10 23:33:46,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:46,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567195415] [2021-03-10 23:33:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:46,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567195415] [2021-03-10 23:33:46,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379820555] [2021-03-10 23:33:46,836 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 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 [2021-03-10 23:33:46,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 23:33:46,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:46,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 23:33:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:46,990 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:46,991 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 18 treesize of output 10 [2021-03-10 23:33:46,993 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:46,994 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:46,994 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:46,994 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-03-10 23:33:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:33:47,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:47,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 22 [2021-03-10 23:33:47,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147294159] [2021-03-10 23:33:47,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 23:33:47,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 23:33:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-03-10 23:33:47,048 INFO L87 Difference]: Start difference. First operand 4773 states and 14447 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:50,772 INFO L93 Difference]: Finished difference Result 14388 states and 42827 transitions. [2021-03-10 23:33:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-03-10 23:33:50,772 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 23:33:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:50,806 INFO L225 Difference]: With dead ends: 14388 [2021-03-10 23:33:50,806 INFO L226 Difference]: Without dead ends: 13848 [2021-03-10 23:33:50,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5580 ImplicationChecksByTransitivity, 2744.2ms TimeCoverageRelationStatistics Valid=2530, Invalid=11512, Unknown=0, NotChecked=0, Total=14042 [2021-03-10 23:33:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13848 states. [2021-03-10 23:33:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13848 to 5949. [2021-03-10 23:33:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5949 states, 5948 states have (on average 3.023705447209146) internal successors, (17985), 5948 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 17985 transitions. [2021-03-10 23:33:51,046 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 17985 transitions. Word has length 44 [2021-03-10 23:33:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:51,046 INFO L480 AbstractCegarLoop]: Abstraction has 5949 states and 17985 transitions. [2021-03-10 23:33:51,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 17985 transitions. [2021-03-10 23:33:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 23:33:51,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:51,063 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:51,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-10 23:33:51,279 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash 893511408, now seen corresponding path program 13 times [2021-03-10 23:33:51,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:51,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170518635] [2021-03-10 23:33:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:51,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170518635] [2021-03-10 23:33:51,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829442114] [2021-03-10 23:33:51,646 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 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 [2021-03-10 23:33:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:51,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 23:33:51,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:51,807 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 17 treesize of output 13 [2021-03-10 23:33:51,808 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:51,816 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:51,817 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:51,817 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:31 [2021-03-10 23:33:52,132 INFO L446 ElimStorePlain]: Different costs {0=[q3], 6=[q1]} [2021-03-10 23:33:52,136 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 13 treesize of output 9 [2021-03-10 23:33:52,138 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:52,140 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 [2021-03-10 23:33:52,141 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:52,148 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 [2021-03-10 23:33:52,149 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:52,202 INFO L628 ElimStorePlain]: treesize reduction 35, result has 67.9 percent of original size [2021-03-10 23:33:52,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:33:52,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 15 [2021-03-10 23:33:52,227 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:52,233 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-03-10 23:33:52,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 13 [2021-03-10 23:33:52,239 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:52,252 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:52,253 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:33:52,253 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:144, output treesize:23 [2021-03-10 23:33:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:52,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:52,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2021-03-10 23:33:52,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211722042] [2021-03-10 23:33:52,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 23:33:52,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:52,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 23:33:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-03-10 23:33:52,341 INFO L87 Difference]: Start difference. First operand 5949 states and 17985 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:54,433 INFO L93 Difference]: Finished difference Result 13974 states and 41634 transitions. [2021-03-10 23:33:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 23:33:54,433 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 23:33:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:54,461 INFO L225 Difference]: With dead ends: 13974 [2021-03-10 23:33:54,462 INFO L226 Difference]: Without dead ends: 11588 [2021-03-10 23:33:54,463 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1710.0ms TimeCoverageRelationStatistics Valid=626, Invalid=2344, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 23:33:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11588 states. [2021-03-10 23:33:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11588 to 7127. [2021-03-10 23:33:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7127 states, 7126 states have (on average 3.03381981476284) internal successors, (21619), 7126 states have internal predecessors, (21619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7127 states to 7127 states and 21619 transitions. [2021-03-10 23:33:54,713 INFO L78 Accepts]: Start accepts. Automaton has 7127 states and 21619 transitions. Word has length 44 [2021-03-10 23:33:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:54,714 INFO L480 AbstractCegarLoop]: Abstraction has 7127 states and 21619 transitions. [2021-03-10 23:33:54,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7127 states and 21619 transitions. [2021-03-10 23:33:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 23:33:54,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:54,731 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:54,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-03-10 23:33:54,955 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1942472024, now seen corresponding path program 14 times [2021-03-10 23:33:54,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:54,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894409517] [2021-03-10 23:33:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-10 23:33:54,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894409517] [2021-03-10 23:33:54,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821088061] [2021-03-10 23:33:54,988 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 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 [2021-03-10 23:33:55,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 23:33:55,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:55,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-10 23:33:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:33:55,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:55,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-03-10 23:33:55,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576566639] [2021-03-10 23:33:55,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 23:33:55,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:55,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 23:33:55,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-10 23:33:55,099 INFO L87 Difference]: Start difference. First operand 7127 states and 21619 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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) [2021-03-10 23:33:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:33:55,190 INFO L93 Difference]: Finished difference Result 16221 states and 48694 transitions. [2021-03-10 23:33:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-10 23:33:55,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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 44 [2021-03-10 23:33:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:33:55,213 INFO L225 Difference]: With dead ends: 16221 [2021-03-10 23:33:55,213 INFO L226 Difference]: Without dead ends: 16185 [2021-03-10 23:33:55,214 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-10 23:33:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-03-10 23:33:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13826. [2021-03-10 23:33:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13826 states, 13825 states have (on average 3.0733453887884266) internal successors, (42489), 13825 states have internal predecessors, (42489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:33:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13826 states to 13826 states and 42489 transitions. [2021-03-10 23:33:55,590 INFO L78 Accepts]: Start accepts. Automaton has 13826 states and 42489 transitions. Word has length 44 [2021-03-10 23:33:55,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:33:55,590 INFO L480 AbstractCegarLoop]: Abstraction has 13826 states and 42489 transitions. [2021-03-10 23:33:55,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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) [2021-03-10 23:33:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 13826 states and 42489 transitions. [2021-03-10 23:33:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 23:33:55,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:33:55,627 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:33:55,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:33:55,853 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:33:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:33:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1908147278, now seen corresponding path program 15 times [2021-03-10 23:33:55,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:33:55,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748114347] [2021-03-10 23:33:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:33:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:33:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:33:56,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748114347] [2021-03-10 23:33:56,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746056560] [2021-03-10 23:33:56,284 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 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 [2021-03-10 23:33:56,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-10 23:33:56,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:33:56,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 23:33:56,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:33:56,548 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:33:56,548 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 18 treesize of output 10 [2021-03-10 23:33:56,550 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:33:56,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:33:56,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:33:56,552 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-03-10 23:33:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:33:56,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:33:56,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 24 [2021-03-10 23:33:56,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169665093] [2021-03-10 23:33:56,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 23:33:56,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:33:56,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 23:33:56,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-03-10 23:33:56,619 INFO L87 Difference]: Start difference. First operand 13826 states and 42489 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:34:00,483 INFO L93 Difference]: Finished difference Result 28714 states and 89627 transitions. [2021-03-10 23:34:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-03-10 23:34:00,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 23:34:00,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:34:00,540 INFO L225 Difference]: With dead ends: 28714 [2021-03-10 23:34:00,540 INFO L226 Difference]: Without dead ends: 22691 [2021-03-10 23:34:00,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3565 ImplicationChecksByTransitivity, 2957.1ms TimeCoverageRelationStatistics Valid=1666, Invalid=9046, Unknown=0, NotChecked=0, Total=10712 [2021-03-10 23:34:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22691 states. [2021-03-10 23:34:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22691 to 7841. [2021-03-10 23:34:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7841 states, 7840 states have (on average 3.0378826530612244) internal successors, (23817), 7840 states have internal predecessors, (23817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 23817 transitions. [2021-03-10 23:34:00,923 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 23817 transitions. Word has length 46 [2021-03-10 23:34:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:34:00,924 INFO L480 AbstractCegarLoop]: Abstraction has 7841 states and 23817 transitions. [2021-03-10 23:34:00,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 23817 transitions. [2021-03-10 23:34:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 23:34:00,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:34:00,945 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:34:01,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-03-10 23:34:01,159 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:34:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:34:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1189246749, now seen corresponding path program 16 times [2021-03-10 23:34:01,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:34:01,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967758730] [2021-03-10 23:34:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:34:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:34:01,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967758730] [2021-03-10 23:34:01,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862835738] [2021-03-10 23:34:01,215 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 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 [2021-03-10 23:34:01,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 23:34:01,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:34:01,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 23:34:01,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:34:01,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:34:01,310 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 15 treesize of output 7 [2021-03-10 23:34:01,312 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:01,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:01,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:01,314 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:5 [2021-03-10 23:34:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:34:01,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:34:01,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 7 [2021-03-10 23:34:01,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764843931] [2021-03-10 23:34:01,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 23:34:01,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:34:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 23:34:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-03-10 23:34:01,377 INFO L87 Difference]: Start difference. First operand 7841 states and 23817 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 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) [2021-03-10 23:34:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:34:01,501 INFO L93 Difference]: Finished difference Result 14769 states and 44767 transitions. [2021-03-10 23:34:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 23:34:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 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 49 [2021-03-10 23:34:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:34:01,546 INFO L225 Difference]: With dead ends: 14769 [2021-03-10 23:34:01,546 INFO L226 Difference]: Without dead ends: 14709 [2021-03-10 23:34:01,546 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-03-10 23:34:01,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14709 states. [2021-03-10 23:34:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14709 to 12822. [2021-03-10 23:34:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12822 states, 12821 states have (on average 3.094064425551829) internal successors, (39669), 12821 states have internal predecessors, (39669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 39669 transitions. [2021-03-10 23:34:01,917 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 39669 transitions. Word has length 49 [2021-03-10 23:34:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:34:01,917 INFO L480 AbstractCegarLoop]: Abstraction has 12822 states and 39669 transitions. [2021-03-10 23:34:01,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 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) [2021-03-10 23:34:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 39669 transitions. [2021-03-10 23:34:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 23:34:01,948 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:34:01,948 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:34:02,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:34:02,164 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:34:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:34:02,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1501932003, now seen corresponding path program 17 times [2021-03-10 23:34:02,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:34:02,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499031956] [2021-03-10 23:34:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:34:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:34:02,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499031956] [2021-03-10 23:34:02,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236526997] [2021-03-10 23:34:02,372 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 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 [2021-03-10 23:34:02,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 23:34:02,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:34:02,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 23:34:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:34:02,776 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-10 23:34:02,829 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:34:02,829 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 22 treesize of output 10 [2021-03-10 23:34:02,832 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:02,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:02,838 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:02,838 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:9 [2021-03-10 23:34:02,928 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 11 treesize of output 7 [2021-03-10 23:34:02,930 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:02,932 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:02,933 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:02,933 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:34:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:34:03,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:34:03,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2021-03-10 23:34:03,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932766732] [2021-03-10 23:34:03,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 23:34:03,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:34:03,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 23:34:03,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-03-10 23:34:03,009 INFO L87 Difference]: Start difference. First operand 12822 states and 39669 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:34:16,827 INFO L93 Difference]: Finished difference Result 37627 states and 115011 transitions. [2021-03-10 23:34:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2021-03-10 23:34:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 23:34:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:34:16,899 INFO L225 Difference]: With dead ends: 37627 [2021-03-10 23:34:16,899 INFO L226 Difference]: Without dead ends: 33862 [2021-03-10 23:34:16,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30829 ImplicationChecksByTransitivity, 11026.6ms TimeCoverageRelationStatistics Valid=7799, Invalid=64831, Unknown=0, NotChecked=0, Total=72630 [2021-03-10 23:34:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2021-03-10 23:34:17,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 20702. [2021-03-10 23:34:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20702 states, 20701 states have (on average 3.0932322110042993) internal successors, (64033), 20701 states have internal predecessors, (64033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20702 states to 20702 states and 64033 transitions. [2021-03-10 23:34:17,552 INFO L78 Accepts]: Start accepts. Automaton has 20702 states and 64033 transitions. Word has length 49 [2021-03-10 23:34:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:34:17,552 INFO L480 AbstractCegarLoop]: Abstraction has 20702 states and 64033 transitions. [2021-03-10 23:34:17,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 20702 states and 64033 transitions. [2021-03-10 23:34:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 23:34:17,580 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:34:17,580 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:34:17,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:34:17,781 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:34:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:34:17,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1750803673, now seen corresponding path program 18 times [2021-03-10 23:34:17,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:34:17,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984988524] [2021-03-10 23:34:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:34:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:34:18,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984988524] [2021-03-10 23:34:18,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595301825] [2021-03-10 23:34:18,010 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 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 [2021-03-10 23:34:18,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 23:34:18,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:34:18,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 23:34:18,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:34:18,198 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:34:18,199 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 22 treesize of output 10 [2021-03-10 23:34:18,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:18,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:18,204 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:18,204 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:9 [2021-03-10 23:34:18,279 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 11 treesize of output 7 [2021-03-10 23:34:18,280 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:18,282 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:18,282 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:18,282 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:34:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:34:18,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:34:18,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2021-03-10 23:34:18,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112993232] [2021-03-10 23:34:18,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 23:34:18,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:34:18,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 23:34:18,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-03-10 23:34:18,356 INFO L87 Difference]: Start difference. First operand 20702 states and 64033 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:20,654 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-03-10 23:34:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:34:27,326 INFO L93 Difference]: Finished difference Result 70701 states and 215537 transitions. [2021-03-10 23:34:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2021-03-10 23:34:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 23:34:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:34:27,470 INFO L225 Difference]: With dead ends: 70701 [2021-03-10 23:34:27,470 INFO L226 Difference]: Without dead ends: 63181 [2021-03-10 23:34:27,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12219 ImplicationChecksByTransitivity, 6296.6ms TimeCoverageRelationStatistics Valid=3934, Invalid=27572, Unknown=0, NotChecked=0, Total=31506 [2021-03-10 23:34:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63181 states. [2021-03-10 23:34:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63181 to 32507. [2021-03-10 23:34:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32507 states, 32506 states have (on average 3.0753707007936995) internal successors, (99968), 32506 states have internal predecessors, (99968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32507 states to 32507 states and 99968 transitions. [2021-03-10 23:34:28,338 INFO L78 Accepts]: Start accepts. Automaton has 32507 states and 99968 transitions. Word has length 49 [2021-03-10 23:34:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:34:28,338 INFO L480 AbstractCegarLoop]: Abstraction has 32507 states and 99968 transitions. [2021-03-10 23:34:28,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 32507 states and 99968 transitions. [2021-03-10 23:34:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 23:34:28,406 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:34:28,406 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:34:28,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:34:28,619 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:34:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:34:28,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1951689687, now seen corresponding path program 19 times [2021-03-10 23:34:28,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:34:28,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668977377] [2021-03-10 23:34:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:34:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:34:28,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668977377] [2021-03-10 23:34:28,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826476864] [2021-03-10 23:34:28,966 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:34:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:29,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 23:34:29,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:34:29,187 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 [2021-03-10 23:34:29,189 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:29,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:29,203 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:29,203 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:29 [2021-03-10 23:34:30,181 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 23:34:30,228 INFO L446 ElimStorePlain]: Different costs {0=[q3], 1=[v_prenex_11], 3=[q1, v_prenex_9]} [2021-03-10 23:34:30,233 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 [2021-03-10 23:34:30,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:30,298 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:30,304 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 [2021-03-10 23:34:30,305 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:30,314 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:34:30,314 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 27 treesize of output 15 [2021-03-10 23:34:30,316 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:30,368 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:30,375 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-03-10 23:34:30,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 15 [2021-03-10 23:34:30,378 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:30,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:30,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:34:30,429 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 15 treesize of output 7 [2021-03-10 23:34:30,431 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:30,437 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:34:30,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 15 [2021-03-10 23:34:30,441 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:30,483 INFO L628 ElimStorePlain]: treesize reduction 12, result has 71.4 percent of original size [2021-03-10 23:34:30,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:34:30,484 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:152, output treesize:28 [2021-03-10 23:34:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:34:30,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:34:30,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-03-10 23:34:30,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940750976] [2021-03-10 23:34:30,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 23:34:30,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:34:30,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 23:34:30,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2021-03-10 23:34:30,576 INFO L87 Difference]: Start difference. First operand 32507 states and 99968 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:33,523 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-03-10 23:34:34,266 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-03-10 23:34:34,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:34:34,970 INFO L93 Difference]: Finished difference Result 44733 states and 135770 transitions. [2021-03-10 23:34:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 23:34:34,971 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 23:34:34,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:34:35,059 INFO L225 Difference]: With dead ends: 44733 [2021-03-10 23:34:35,059 INFO L226 Difference]: Without dead ends: 40959 [2021-03-10 23:34:35,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3889.3ms TimeCoverageRelationStatistics Valid=850, Invalid=4850, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 23:34:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40959 states. [2021-03-10 23:34:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40959 to 32464. [2021-03-10 23:34:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32464 states, 32463 states have (on average 3.0758401872901455) internal successors, (99851), 32463 states have internal predecessors, (99851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32464 states to 32464 states and 99851 transitions. [2021-03-10 23:34:35,717 INFO L78 Accepts]: Start accepts. Automaton has 32464 states and 99851 transitions. Word has length 49 [2021-03-10 23:34:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:34:35,717 INFO L480 AbstractCegarLoop]: Abstraction has 32464 states and 99851 transitions. [2021-03-10 23:34:35,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 32464 states and 99851 transitions. [2021-03-10 23:34:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 23:34:35,766 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:34:35,767 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:34:35,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:34:35,967 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:34:35,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:34:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1026372651, now seen corresponding path program 20 times [2021-03-10 23:34:35,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:34:35,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090032761] [2021-03-10 23:34:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:34:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:34:36,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090032761] [2021-03-10 23:34:36,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913683943] [2021-03-10 23:34:36,186 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 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 [2021-03-10 23:34:36,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 23:34:36,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:34:36,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 23:34:36,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:34:36,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:34:36,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:34:36,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:34:36,562 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 29 treesize of output 13 [2021-03-10 23:34:36,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:36,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:36,570 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:36,570 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:12 [2021-03-10 23:34:36,766 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 11 treesize of output 7 [2021-03-10 23:34:36,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:36,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:36,770 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:36,770 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:34:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:34:36,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:34:36,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2021-03-10 23:34:36,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918942728] [2021-03-10 23:34:36,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 23:34:36,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:34:36,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 23:34:36,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-03-10 23:34:36,869 INFO L87 Difference]: Start difference. First operand 32464 states and 99851 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:34:43,316 INFO L93 Difference]: Finished difference Result 56840 states and 173390 transitions. [2021-03-10 23:34:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-03-10 23:34:43,317 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-03-10 23:34:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:34:43,454 INFO L225 Difference]: With dead ends: 56840 [2021-03-10 23:34:43,455 INFO L226 Difference]: Without dead ends: 53261 [2021-03-10 23:34:43,456 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7255 ImplicationChecksByTransitivity, 4379.5ms TimeCoverageRelationStatistics Valid=2364, Invalid=17942, Unknown=0, NotChecked=0, Total=20306 [2021-03-10 23:34:43,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53261 states. [2021-03-10 23:34:44,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53261 to 32761. [2021-03-10 23:34:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32761 states, 32760 states have (on average 3.078785103785104) internal successors, (100861), 32760 states have internal predecessors, (100861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32761 states to 32761 states and 100861 transitions. [2021-03-10 23:34:44,393 INFO L78 Accepts]: Start accepts. Automaton has 32761 states and 100861 transitions. Word has length 51 [2021-03-10 23:34:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:34:44,394 INFO L480 AbstractCegarLoop]: Abstraction has 32761 states and 100861 transitions. [2021-03-10 23:34:44,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:44,394 INFO L276 IsEmpty]: Start isEmpty. Operand 32761 states and 100861 transitions. [2021-03-10 23:34:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 23:34:44,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:34:44,447 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:34:44,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-03-10 23:34:44,648 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:34:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:34:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2128297217, now seen corresponding path program 21 times [2021-03-10 23:34:44,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:34:44,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057517541] [2021-03-10 23:34:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:34:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:34:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:34:44,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057517541] [2021-03-10 23:34:44,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201598774] [2021-03-10 23:34:44,957 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 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 [2021-03-10 23:34:44,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 23:34:44,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:34:44,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 23:34:44,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:34:45,130 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:34:45,130 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 18 treesize of output 10 [2021-03-10 23:34:45,133 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:45,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:45,138 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:45,138 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:9 [2021-03-10 23:34:45,234 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 11 treesize of output 7 [2021-03-10 23:34:45,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:34:45,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:34:45,238 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:34:45,238 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:34:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-03-10 23:34:45,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:34:45,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 27 [2021-03-10 23:34:45,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3173446] [2021-03-10 23:34:45,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 23:34:45,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:34:45,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 23:34:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-03-10 23:34:45,464 INFO L87 Difference]: Start difference. First operand 32761 states and 100861 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:34:55,795 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-03-10 23:35:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:35:03,056 INFO L93 Difference]: Finished difference Result 60273 states and 183128 transitions. [2021-03-10 23:35:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2021-03-10 23:35:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-03-10 23:35:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:35:03,203 INFO L225 Difference]: With dead ends: 60273 [2021-03-10 23:35:03,203 INFO L226 Difference]: Without dead ends: 57749 [2021-03-10 23:35:03,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32757 ImplicationChecksByTransitivity, 14448.7ms TimeCoverageRelationStatistics Valid=8938, Invalid=65318, Unknown=0, NotChecked=0, Total=74256 [2021-03-10 23:35:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57749 states. [2021-03-10 23:35:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57749 to 33335. [2021-03-10 23:35:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33335 states, 33334 states have (on average 3.0770984580308394) internal successors, (102572), 33334 states have internal predecessors, (102572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33335 states to 33335 states and 102572 transitions. [2021-03-10 23:35:04,336 INFO L78 Accepts]: Start accepts. Automaton has 33335 states and 102572 transitions. Word has length 51 [2021-03-10 23:35:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:35:04,337 INFO L480 AbstractCegarLoop]: Abstraction has 33335 states and 102572 transitions. [2021-03-10 23:35:04,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 33335 states and 102572 transitions. [2021-03-10 23:35:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 23:35:04,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:35:04,403 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:35:04,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:35:04,604 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:35:04,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:35:04,604 INFO L82 PathProgramCache]: Analyzing trace with hash -549490785, now seen corresponding path program 22 times [2021-03-10 23:35:04,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:35:04,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968779068] [2021-03-10 23:35:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:35:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:35:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:35:05,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968779068] [2021-03-10 23:35:05,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940902346] [2021-03-10 23:35:05,022 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:35:05,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 23:35:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:35:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 23:35:05,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:35:05,533 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:35:05,534 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 22 treesize of output 10 [2021-03-10 23:35:05,537 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:05,542 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:05,544 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:05,544 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2021-03-10 23:35:05,633 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 11 treesize of output 7 [2021-03-10 23:35:05,635 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:05,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:05,638 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:05,638 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:35:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:35:05,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:35:05,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2021-03-10 23:35:05,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996405489] [2021-03-10 23:35:05,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 23:35:05,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:35:05,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 23:35:05,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-03-10 23:35:05,672 INFO L87 Difference]: Start difference. First operand 33335 states and 102572 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:35:06,833 INFO L93 Difference]: Finished difference Result 49567 states and 151032 transitions. [2021-03-10 23:35:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 23:35:06,834 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-03-10 23:35:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:35:06,954 INFO L225 Difference]: With dead ends: 49567 [2021-03-10 23:35:06,954 INFO L226 Difference]: Without dead ends: 49567 [2021-03-10 23:35:06,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1166.3ms TimeCoverageRelationStatistics Valid=213, Invalid=1269, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 23:35:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49567 states. [2021-03-10 23:35:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49567 to 29893. [2021-03-10 23:35:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29893 states, 29892 states have (on average 3.059815335206744) internal successors, (91464), 29892 states have internal predecessors, (91464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29893 states to 29893 states and 91464 transitions. [2021-03-10 23:35:07,816 INFO L78 Accepts]: Start accepts. Automaton has 29893 states and 91464 transitions. Word has length 51 [2021-03-10 23:35:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:35:07,816 INFO L480 AbstractCegarLoop]: Abstraction has 29893 states and 91464 transitions. [2021-03-10 23:35:07,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 29893 states and 91464 transitions. [2021-03-10 23:35:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 23:35:07,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:35:07,884 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:35:08,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-03-10 23:35:08,085 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:35:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:35:08,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1793055223, now seen corresponding path program 23 times [2021-03-10 23:35:08,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:35:08,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366762927] [2021-03-10 23:35:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:35:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:35:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:35:08,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366762927] [2021-03-10 23:35:08,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207322919] [2021-03-10 23:35:08,798 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 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 [2021-03-10 23:35:08,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 23:35:08,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:35:08,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 23:35:08,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:35:09,183 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-03-10 23:35:09,211 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:35:09,211 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 22 treesize of output 10 [2021-03-10 23:35:09,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:09,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:09,223 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:09,223 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2021-03-10 23:35:09,354 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 11 treesize of output 7 [2021-03-10 23:35:09,357 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:09,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:09,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:09,362 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:35:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:35:09,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:35:09,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 30 [2021-03-10 23:35:09,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850844875] [2021-03-10 23:35:09,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 23:35:09,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:35:09,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 23:35:09,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2021-03-10 23:35:09,467 INFO L87 Difference]: Start difference. First operand 29893 states and 91464 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:35:20,945 INFO L93 Difference]: Finished difference Result 113268 states and 340351 transitions. [2021-03-10 23:35:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2021-03-10 23:35:20,946 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-03-10 23:35:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:35:21,227 INFO L225 Difference]: With dead ends: 113268 [2021-03-10 23:35:21,228 INFO L226 Difference]: Without dead ends: 113060 [2021-03-10 23:35:21,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16077 ImplicationChecksByTransitivity, 8496.1ms TimeCoverageRelationStatistics Valid=6463, Invalid=32149, Unknown=0, NotChecked=0, Total=38612 [2021-03-10 23:35:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113060 states. [2021-03-10 23:35:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113060 to 30217. [2021-03-10 23:35:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30217 states, 30216 states have (on average 3.0600675138999205) internal successors, (92463), 30216 states have internal predecessors, (92463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30217 states to 30217 states and 92463 transitions. [2021-03-10 23:35:22,758 INFO L78 Accepts]: Start accepts. Automaton has 30217 states and 92463 transitions. Word has length 51 [2021-03-10 23:35:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:35:22,758 INFO L480 AbstractCegarLoop]: Abstraction has 30217 states and 92463 transitions. [2021-03-10 23:35:22,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 30217 states and 92463 transitions. [2021-03-10 23:35:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-03-10 23:35:22,813 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:35:22,813 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:35:23,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-03-10 23:35:23,015 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:35:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:35:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1723374429, now seen corresponding path program 24 times [2021-03-10 23:35:23,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:35:23,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304609109] [2021-03-10 23:35:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:35:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:35:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-03-10 23:35:23,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304609109] [2021-03-10 23:35:23,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604264006] [2021-03-10 23:35:23,174 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 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 [2021-03-10 23:35:23,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 23:35:23,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:35:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 23:35:23,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:35:23,629 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:35:23,629 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 18 treesize of output 10 [2021-03-10 23:35:23,633 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:23,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:23,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:23,641 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:9 [2021-03-10 23:35:23,750 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 11 treesize of output 7 [2021-03-10 23:35:23,751 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:23,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:23,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:23,753 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:35:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-03-10 23:35:23,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:35:23,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-03-10 23:35:23,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799475565] [2021-03-10 23:35:23,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 23:35:23,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:35:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 23:35:23,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-03-10 23:35:23,825 INFO L87 Difference]: Start difference. First operand 30217 states and 92463 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:24,940 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-10 23:35:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:35:30,690 INFO L93 Difference]: Finished difference Result 94742 states and 285397 transitions. [2021-03-10 23:35:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-10 23:35:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-03-10 23:35:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:35:30,939 INFO L225 Difference]: With dead ends: 94742 [2021-03-10 23:35:30,940 INFO L226 Difference]: Without dead ends: 94742 [2021-03-10 23:35:30,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3669 ImplicationChecksByTransitivity, 3000.3ms TimeCoverageRelationStatistics Valid=1720, Invalid=8786, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 23:35:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94742 states. [2021-03-10 23:35:32,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94742 to 34230. [2021-03-10 23:35:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34230 states, 34229 states have (on average 3.0484092436238277) internal successors, (104344), 34229 states have internal predecessors, (104344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34230 states to 34230 states and 104344 transitions. [2021-03-10 23:35:32,205 INFO L78 Accepts]: Start accepts. Automaton has 34230 states and 104344 transitions. Word has length 53 [2021-03-10 23:35:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:35:32,206 INFO L480 AbstractCegarLoop]: Abstraction has 34230 states and 104344 transitions. [2021-03-10 23:35:32,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 34230 states and 104344 transitions. [2021-03-10 23:35:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:35:32,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:35:32,265 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:35:32,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:35:32,466 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:35:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:35:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2102977505, now seen corresponding path program 25 times [2021-03-10 23:35:32,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:35:32,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700997773] [2021-03-10 23:35:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:35:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:35:32,807 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-10 23:35:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:35:33,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700997773] [2021-03-10 23:35:33,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265314707] [2021-03-10 23:35:33,435 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 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 [2021-03-10 23:35:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:35:33,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 23:35:33,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:35:33,950 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 17 treesize of output 13 [2021-03-10 23:35:33,953 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:33,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:33,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:33,976 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:36 [2021-03-10 23:35:34,563 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-03-10 23:35:34,779 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 [2021-03-10 23:35:34,782 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:34,789 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 [2021-03-10 23:35:34,792 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:34,798 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 13 treesize of output 9 [2021-03-10 23:35:34,802 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:35:34,814 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 27 treesize of output 15 [2021-03-10 23:35:34,818 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:34,824 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 23:35:34,826 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:34,946 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 23:35:34,947 INFO L628 ElimStorePlain]: treesize reduction 42, result has 72.7 percent of original size [2021-03-10 23:35:34,948 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:35:34,948 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:267, output treesize:112 [2021-03-10 23:35:35,186 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:35:35,313 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:35:35,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:35:35,318 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:35:35,321 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:35:35,322 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:35:35,322 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-03-10 23:35:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:35:35,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:35:35,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2021-03-10 23:35:35,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465495948] [2021-03-10 23:35:35,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 23:35:35,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:35:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 23:35:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1094, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 23:35:35,415 INFO L87 Difference]: Start difference. First operand 34230 states and 104344 transitions. Second operand has 37 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:38,275 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-10 23:35:38,679 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-03-10 23:35:39,546 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-03-10 23:35:40,260 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-03-10 23:35:40,440 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:35:41,102 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-03-10 23:35:41,369 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-03-10 23:35:42,584 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:35:43,411 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:35:43,552 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-03-10 23:35:44,158 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-03-10 23:35:45,161 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-03-10 23:35:46,728 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-03-10 23:35:47,861 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 23:35:48,515 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-03-10 23:35:48,663 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 23:35:49,402 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-03-10 23:35:49,544 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:35:50,250 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:35:50,399 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-03-10 23:35:51,816 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-03-10 23:35:52,458 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 23:35:52,703 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 23:35:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:35:56,399 INFO L93 Difference]: Finished difference Result 74633 states and 224011 transitions. [2021-03-10 23:35:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2021-03-10 23:35:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:35:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:35:56,577 INFO L225 Difference]: With dead ends: 74633 [2021-03-10 23:35:56,577 INFO L226 Difference]: Without dead ends: 72412 [2021-03-10 23:35:56,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24123 ImplicationChecksByTransitivity, 17368.2ms TimeCoverageRelationStatistics Valid=8776, Invalid=43894, Unknown=0, NotChecked=0, Total=52670 [2021-03-10 23:35:56,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72412 states. [2021-03-10 23:35:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72412 to 37904. [2021-03-10 23:35:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37904 states, 37903 states have (on average 3.058016515843073) internal successors, (115908), 37903 states have internal predecessors, (115908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37904 states to 37904 states and 115908 transitions. [2021-03-10 23:35:57,671 INFO L78 Accepts]: Start accepts. Automaton has 37904 states and 115908 transitions. Word has length 56 [2021-03-10 23:35:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:35:57,671 INFO L480 AbstractCegarLoop]: Abstraction has 37904 states and 115908 transitions. [2021-03-10 23:35:57,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 37904 states and 115908 transitions. [2021-03-10 23:35:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:35:57,737 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:35:57,737 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:35:57,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:35:57,938 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:35:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:35:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash -980077063, now seen corresponding path program 26 times [2021-03-10 23:35:57,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:35:57,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146223435] [2021-03-10 23:35:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:35:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:35:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-10 23:35:58,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146223435] [2021-03-10 23:35:58,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344764406] [2021-03-10 23:35:58,002 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 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 [2021-03-10 23:35:58,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 23:35:58,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:35:58,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-10 23:35:58,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:35:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:35:58,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:35:58,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-03-10 23:35:58,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506276477] [2021-03-10 23:35:58,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 23:35:58,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:35:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 23:35:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-10 23:35:58,160 INFO L87 Difference]: Start difference. First operand 37904 states and 115908 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:35:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:35:58,522 INFO L93 Difference]: Finished difference Result 72993 states and 221971 transitions. [2021-03-10 23:35:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 23:35:58,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:35:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:35:59,127 INFO L225 Difference]: With dead ends: 72993 [2021-03-10 23:35:59,128 INFO L226 Difference]: Without dead ends: 72961 [2021-03-10 23:35:59,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-10 23:35:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72961 states. [2021-03-10 23:36:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72961 to 55815. [2021-03-10 23:36:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55815 states, 55814 states have (on average 3.0660407782993513) internal successors, (171128), 55814 states have internal predecessors, (171128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55815 states to 55815 states and 171128 transitions. [2021-03-10 23:36:00,985 INFO L78 Accepts]: Start accepts. Automaton has 55815 states and 171128 transitions. Word has length 56 [2021-03-10 23:36:00,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:36:00,986 INFO L480 AbstractCegarLoop]: Abstraction has 55815 states and 171128 transitions. [2021-03-10 23:36:00,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 55815 states and 171128 transitions. [2021-03-10 23:36:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:36:01,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:36:01,097 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:36:01,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:36:01,299 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:36:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:36:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 778620645, now seen corresponding path program 27 times [2021-03-10 23:36:01,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:36:01,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053249588] [2021-03-10 23:36:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:36:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:36:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:36:01,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053249588] [2021-03-10 23:36:01,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320259672] [2021-03-10 23:36:01,637 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 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 [2021-03-10 23:36:01,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 23:36:01,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:36:01,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 23:36:01,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:36:02,182 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 23:36:02,524 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:36:02,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:36:02,530 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:02,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:02,534 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:36:02,534 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-03-10 23:36:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-03-10 23:36:02,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:36:02,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-03-10 23:36:02,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998906492] [2021-03-10 23:36:02,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 23:36:02,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:36:02,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 23:36:02,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-03-10 23:36:02,605 INFO L87 Difference]: Start difference. First operand 55815 states and 171128 transitions. Second operand has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:04,987 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 23:36:06,592 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 23:36:07,021 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-03-10 23:36:07,428 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 23:36:07,614 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-03-10 23:36:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:36:08,474 INFO L93 Difference]: Finished difference Result 139582 states and 422743 transitions. [2021-03-10 23:36:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-03-10 23:36:08,476 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:36:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:36:08,875 INFO L225 Difference]: With dead ends: 139582 [2021-03-10 23:36:08,876 INFO L226 Difference]: Without dead ends: 139582 [2021-03-10 23:36:08,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 4402.4ms TimeCoverageRelationStatistics Valid=1149, Invalid=5493, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 23:36:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139582 states. [2021-03-10 23:36:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139582 to 64456. [2021-03-10 23:36:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64456 states, 64455 states have (on average 3.052656892405554) internal successors, (196759), 64455 states have internal predecessors, (196759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64456 states to 64456 states and 196759 transitions. [2021-03-10 23:36:11,514 INFO L78 Accepts]: Start accepts. Automaton has 64456 states and 196759 transitions. Word has length 56 [2021-03-10 23:36:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:36:11,514 INFO L480 AbstractCegarLoop]: Abstraction has 64456 states and 196759 transitions. [2021-03-10 23:36:11,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 64456 states and 196759 transitions. [2021-03-10 23:36:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:36:11,641 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:36:11,641 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:36:11,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-03-10 23:36:11,842 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:36:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:36:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1534591291, now seen corresponding path program 28 times [2021-03-10 23:36:11,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:36:11,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187801558] [2021-03-10 23:36:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:36:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:36:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:36:12,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187801558] [2021-03-10 23:36:12,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813175087] [2021-03-10 23:36:12,470 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 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 [2021-03-10 23:36:12,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 23:36:12,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:36:12,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 23:36:12,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:36:12,898 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 [2021-03-10 23:36:12,902 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:12,929 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:12,931 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:36:12,931 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:40 [2021-03-10 23:36:14,312 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 23:36:14,493 INFO L446 ElimStorePlain]: Different costs {0=[q3], 1=[v_prenex_14], 6=[q1, v_prenex_13]} [2021-03-10 23:36:14,502 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 [2021-03-10 23:36:14,505 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:14,633 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 23:36:14,634 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:14,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:14,647 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 27 treesize of output 15 [2021-03-10 23:36:14,651 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:14,659 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 [2021-03-10 23:36:14,662 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:14,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:14,778 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-03-10 23:36:14,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 18 [2021-03-10 23:36:14,783 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:14,863 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:14,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:14,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:14,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:14,884 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 22 treesize of output 10 [2021-03-10 23:36:14,889 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:14,902 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-03-10 23:36:14,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 18 [2021-03-10 23:36:14,909 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:14,982 INFO L628 ElimStorePlain]: treesize reduction 12, result has 71.4 percent of original size [2021-03-10 23:36:14,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:36:14,985 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:173, output treesize:28 [2021-03-10 23:36:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:36:15,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:36:15,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2021-03-10 23:36:15,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113347715] [2021-03-10 23:36:15,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 23:36:15,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:36:15,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 23:36:15,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 23:36:15,146 INFO L87 Difference]: Start difference. First operand 64456 states and 196759 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:19,644 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2021-03-10 23:36:20,396 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-03-10 23:36:22,009 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2021-03-10 23:36:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:36:24,054 INFO L93 Difference]: Finished difference Result 90510 states and 273742 transitions. [2021-03-10 23:36:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-03-10 23:36:24,056 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:36:24,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:36:24,273 INFO L225 Difference]: With dead ends: 90510 [2021-03-10 23:36:24,274 INFO L226 Difference]: Without dead ends: 85519 [2021-03-10 23:36:24,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 6607.4ms TimeCoverageRelationStatistics Valid=1479, Invalid=8421, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 23:36:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85519 states. [2021-03-10 23:36:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85519 to 65000. [2021-03-10 23:36:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65000 states, 64999 states have (on average 3.0520623394206066) internal successors, (198381), 64999 states have internal predecessors, (198381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65000 states to 65000 states and 198381 transitions. [2021-03-10 23:36:26,153 INFO L78 Accepts]: Start accepts. Automaton has 65000 states and 198381 transitions. Word has length 56 [2021-03-10 23:36:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:36:26,153 INFO L480 AbstractCegarLoop]: Abstraction has 65000 states and 198381 transitions. [2021-03-10 23:36:26,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 65000 states and 198381 transitions. [2021-03-10 23:36:26,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:36:26,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:36:26,289 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:36:26,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:36:26,492 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:36:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:36:26,492 INFO L82 PathProgramCache]: Analyzing trace with hash -446962657, now seen corresponding path program 29 times [2021-03-10 23:36:26,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:36:26,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374786198] [2021-03-10 23:36:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:36:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:36:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:36:26,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374786198] [2021-03-10 23:36:26,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879700884] [2021-03-10 23:36:26,804 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 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 [2021-03-10 23:36:26,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 23:36:26,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:36:26,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 23:36:26,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:36:27,842 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:36:27,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:36:27,845 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:27,846 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:27,847 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:36:27,847 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-03-10 23:36:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:36:28,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:36:28,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-03-10 23:36:28,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012803124] [2021-03-10 23:36:28,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 23:36:28,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:36:28,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 23:36:28,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-03-10 23:36:28,155 INFO L87 Difference]: Start difference. First operand 65000 states and 198381 transitions. Second operand has 24 states, 24 states have (on average 4.125) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:31,174 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-03-10 23:36:31,365 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-03-10 23:36:32,193 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-03-10 23:36:32,509 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-03-10 23:36:32,704 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-03-10 23:36:32,921 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-03-10 23:36:33,581 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-03-10 23:36:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:36:34,766 INFO L93 Difference]: Finished difference Result 188211 states and 572959 transitions. [2021-03-10 23:36:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-10 23:36:34,768 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:36:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:36:35,289 INFO L225 Difference]: With dead ends: 188211 [2021-03-10 23:36:35,289 INFO L226 Difference]: Without dead ends: 188211 [2021-03-10 23:36:35,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 5210.7ms TimeCoverageRelationStatistics Valid=1177, Invalid=4985, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 23:36:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188211 states. [2021-03-10 23:36:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188211 to 93185. [2021-03-10 23:36:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93185 states, 93184 states have (on average 3.0660306490384617) internal successors, (285705), 93184 states have internal predecessors, (285705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93185 states to 93185 states and 285705 transitions. [2021-03-10 23:36:38,958 INFO L78 Accepts]: Start accepts. Automaton has 93185 states and 285705 transitions. Word has length 56 [2021-03-10 23:36:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:36:38,958 INFO L480 AbstractCegarLoop]: Abstraction has 93185 states and 285705 transitions. [2021-03-10 23:36:38,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 93185 states and 285705 transitions. [2021-03-10 23:36:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:36:39,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:36:39,153 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:36:39,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-03-10 23:36:39,355 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:36:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:36:39,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1378586361, now seen corresponding path program 30 times [2021-03-10 23:36:39,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:36:39,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083177276] [2021-03-10 23:36:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:36:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:36:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 23:36:39,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083177276] [2021-03-10 23:36:39,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223855722] [2021-03-10 23:36:39,609 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 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 [2021-03-10 23:36:39,652 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 23:36:39,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:36:39,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 23:36:39,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:36:40,743 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 23:36:41,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:41,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:41,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:41,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:36:41,068 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:41,082 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:36:41,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 10 [2021-03-10 23:36:41,089 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:41,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:41,106 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:36:41,106 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:13 [2021-03-10 23:36:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:36:41,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:36:41,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-03-10 23:36:41,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754576377] [2021-03-10 23:36:41,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 23:36:41,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:36:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 23:36:41,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-03-10 23:36:41,246 INFO L87 Difference]: Start difference. First operand 93185 states and 285705 transitions. Second operand has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:44,501 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-10 23:36:46,652 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-03-10 23:36:46,798 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-03-10 23:36:47,288 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 23:36:47,618 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-03-10 23:36:49,132 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-03-10 23:36:49,418 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-03-10 23:36:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:36:50,787 INFO L93 Difference]: Finished difference Result 186979 states and 572294 transitions. [2021-03-10 23:36:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-03-10 23:36:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:36:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:36:51,309 INFO L225 Difference]: With dead ends: 186979 [2021-03-10 23:36:51,310 INFO L226 Difference]: Without dead ends: 186979 [2021-03-10 23:36:51,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5704 ImplicationChecksByTransitivity, 7402.4ms TimeCoverageRelationStatistics Valid=2347, Invalid=11933, Unknown=0, NotChecked=0, Total=14280 [2021-03-10 23:36:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186979 states. [2021-03-10 23:36:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186979 to 97599. [2021-03-10 23:36:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97599 states, 97598 states have (on average 3.0792844115658107) internal successors, (300532), 97598 states have internal predecessors, (300532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97599 states to 97599 states and 300532 transitions. [2021-03-10 23:36:55,227 INFO L78 Accepts]: Start accepts. Automaton has 97599 states and 300532 transitions. Word has length 56 [2021-03-10 23:36:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:36:55,228 INFO L480 AbstractCegarLoop]: Abstraction has 97599 states and 300532 transitions. [2021-03-10 23:36:55,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:36:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 97599 states and 300532 transitions. [2021-03-10 23:36:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:36:55,421 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:36:55,421 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:36:55,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:36:55,623 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:36:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:36:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1019035651, now seen corresponding path program 31 times [2021-03-10 23:36:55,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:36:55,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951835611] [2021-03-10 23:36:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:36:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:36:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:36:55,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951835611] [2021-03-10 23:36:55,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852442714] [2021-03-10 23:36:55,941 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 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 [2021-03-10 23:36:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:36:55,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 23:36:56,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:36:56,216 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 [2021-03-10 23:36:56,218 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:56,230 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:56,231 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:36:56,231 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:40 [2021-03-10 23:36:56,789 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-10 23:36:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:57,590 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 45 treesize of output 25 [2021-03-10 23:36:57,595 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:57,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:57,612 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 45 treesize of output 25 [2021-03-10 23:36:57,616 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:57,629 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 32 treesize of output 20 [2021-03-10 23:36:57,634 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:57,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:57,648 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 39 treesize of output 23 [2021-03-10 23:36:57,653 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:57,667 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:36:57,667 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 39 treesize of output 23 [2021-03-10 23:36:57,673 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:58,180 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2021-03-10 23:36:58,181 INFO L628 ElimStorePlain]: treesize reduction 21, result has 92.2 percent of original size [2021-03-10 23:36:58,200 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 5 xjuncts. [2021-03-10 23:36:58,200 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:405, output treesize:248 [2021-03-10 23:36:58,497 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2021-03-10 23:36:58,912 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2021-03-10 23:36:58,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:58,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:36:59,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:59,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-03-10 23:36:59,082 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:59,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,114 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 25 treesize of output 13 [2021-03-10 23:36:59,119 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:59,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:36:59,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:36:59,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-03-10 23:36:59,151 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:36:59,266 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 23:36:59,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:36:59,275 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 23:36:59,276 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:204, output treesize:59 [2021-03-10 23:36:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:36:59,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:36:59,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 32 [2021-03-10 23:36:59,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696427932] [2021-03-10 23:36:59,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 23:36:59,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:36:59,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 23:36:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 23:36:59,712 INFO L87 Difference]: Start difference. First operand 97599 states and 300532 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:37:01,720 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-03-10 23:37:03,114 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-03-10 23:37:04,621 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-03-10 23:37:05,033 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-03-10 23:37:05,755 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-03-10 23:37:05,937 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 23:37:06,257 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-03-10 23:37:07,338 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-03-10 23:37:08,364 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 23:37:08,779 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-10 23:37:09,582 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 23:37:10,215 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-10 23:37:11,179 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2021-03-10 23:37:11,735 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-03-10 23:37:12,860 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-03-10 23:37:13,312 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-03-10 23:37:14,821 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-03-10 23:37:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:37:16,174 INFO L93 Difference]: Finished difference Result 203176 states and 620957 transitions. [2021-03-10 23:37:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-03-10 23:37:16,177 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:37:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:37:16,797 INFO L225 Difference]: With dead ends: 203176 [2021-03-10 23:37:16,798 INFO L226 Difference]: Without dead ends: 203176 [2021-03-10 23:37:16,798 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6134 ImplicationChecksByTransitivity, 10523.4ms TimeCoverageRelationStatistics Valid=2343, Invalid=12663, Unknown=0, NotChecked=0, Total=15006 [2021-03-10 23:37:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203176 states. [2021-03-10 23:37:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203176 to 98418. [2021-03-10 23:37:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98418 states, 98417 states have (on average 3.078025137933487) internal successors, (302930), 98417 states have internal predecessors, (302930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:37:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98418 states to 98418 states and 302930 transitions. [2021-03-10 23:37:20,744 INFO L78 Accepts]: Start accepts. Automaton has 98418 states and 302930 transitions. Word has length 56 [2021-03-10 23:37:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:37:20,744 INFO L480 AbstractCegarLoop]: Abstraction has 98418 states and 302930 transitions. [2021-03-10 23:37:20,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:37:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 98418 states and 302930 transitions. [2021-03-10 23:37:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:37:20,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:37:20,918 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:37:21,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:37:21,121 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:37:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:37:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1303598751, now seen corresponding path program 32 times [2021-03-10 23:37:21,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:37:21,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300385084] [2021-03-10 23:37:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:37:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:37:21,783 WARN L205 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-03-10 23:37:22,337 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-03-10 23:37:22,501 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-03-10 23:37:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:37:23,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300385084] [2021-03-10 23:37:23,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680504261] [2021-03-10 23:37:23,643 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 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 [2021-03-10 23:37:23,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 23:37:23,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:37:23,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 50 conjunts are in the unsatisfiable core [2021-03-10 23:37:23,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:37:24,557 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-03-10 23:37:24,927 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 23:37:25,132 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 23:37:25,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:37:25,376 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 43 treesize of output 31 [2021-03-10 23:37:25,380 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:25,391 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:37:25,391 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 43 treesize of output 31 [2021-03-10 23:37:25,395 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:25,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:37:25,494 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:37:25,494 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:177, output treesize:137 [2021-03-10 23:37:25,707 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 23:37:26,480 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-03-10 23:37:26,850 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 23:37:26,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:37:26,990 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 43 treesize of output 27 [2021-03-10 23:37:26,996 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:27,013 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:37:27,014 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 36 treesize of output 24 [2021-03-10 23:37:27,019 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:27,646 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-03-10 23:37:27,648 INFO L628 ElimStorePlain]: treesize reduction 7, result has 97.8 percent of original size [2021-03-10 23:37:27,660 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:37:27,660 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 49 treesize of output 29 [2021-03-10 23:37:27,665 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:28,013 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-03-10 23:37:28,014 INFO L628 ElimStorePlain]: treesize reduction 74, result has 74.8 percent of original size [2021-03-10 23:37:28,026 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:37:28,026 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 43 treesize of output 27 [2021-03-10 23:37:28,031 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:28,251 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-03-10 23:37:28,252 INFO L628 ElimStorePlain]: treesize reduction 47, result has 75.5 percent of original size [2021-03-10 23:37:28,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:37:28,255 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:381, output treesize:143 [2021-03-10 23:37:28,474 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 23:37:28,697 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:37:28,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-03-10 23:37:28,701 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:37:28,713 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:37:28,715 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:37:28,715 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:12 [2021-03-10 23:37:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:37:28,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:37:28,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2021-03-10 23:37:28,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160134118] [2021-03-10 23:37:28,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-03-10 23:37:28,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:37:28,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-03-10 23:37:28,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 23:37:28,963 INFO L87 Difference]: Start difference. First operand 98418 states and 302930 transitions. Second operand has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:37:29,799 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-03-10 23:37:30,239 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-03-10 23:37:31,359 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-03-10 23:37:32,313 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-03-10 23:37:33,288 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-03-10 23:37:33,523 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-03-10 23:37:33,893 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 23:37:34,341 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-03-10 23:37:34,584 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-03-10 23:37:35,074 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-03-10 23:37:35,662 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-03-10 23:37:36,105 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-03-10 23:37:37,066 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-03-10 23:37:37,403 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-03-10 23:37:38,036 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-03-10 23:37:38,371 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-03-10 23:37:38,824 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 23:37:39,014 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-03-10 23:37:39,530 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-03-10 23:37:40,222 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-03-10 23:37:40,826 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-03-10 23:37:41,734 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-03-10 23:37:42,612 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-03-10 23:37:43,552 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-03-10 23:37:43,887 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-03-10 23:37:44,317 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-03-10 23:37:44,830 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-03-10 23:37:45,311 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-03-10 23:37:45,652 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-03-10 23:37:45,898 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-10 23:37:46,362 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-03-10 23:37:46,778 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-03-10 23:37:47,223 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-03-10 23:37:47,617 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-03-10 23:37:48,009 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-03-10 23:37:48,593 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-03-10 23:37:49,008 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-03-10 23:37:49,346 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-03-10 23:37:49,876 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-03-10 23:37:50,042 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:37:50,557 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2021-03-10 23:37:51,032 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-03-10 23:37:51,300 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 23:37:51,692 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2021-03-10 23:37:52,397 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-03-10 23:37:52,852 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-03-10 23:37:52,998 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2021-03-10 23:37:53,226 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-03-10 23:37:53,413 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-03-10 23:37:53,905 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-03-10 23:37:54,087 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:37:54,388 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 23:37:55,004 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-03-10 23:37:55,658 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-03-10 23:37:56,238 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-03-10 23:37:56,493 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 23:37:56,803 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-03-10 23:37:57,354 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-03-10 23:37:57,767 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-03-10 23:37:58,292 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-03-10 23:37:58,488 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 23:37:59,079 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-03-10 23:37:59,730 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-03-10 23:38:00,232 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-03-10 23:38:00,582 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-03-10 23:38:01,142 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-03-10 23:38:01,423 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 23:38:02,165 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-03-10 23:38:02,615 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-03-10 23:38:02,894 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 23:38:03,322 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2021-03-10 23:38:04,053 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-03-10 23:38:04,293 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-03-10 23:38:04,588 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2021-03-10 23:38:05,087 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-03-10 23:38:05,466 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-03-10 23:38:06,022 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-03-10 23:38:06,700 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-03-10 23:38:07,003 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-03-10 23:38:07,671 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-03-10 23:38:07,900 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:38:08,099 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 23:38:08,430 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-03-10 23:38:08,728 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 23:38:09,516 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 23:38:09,713 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 23:38:10,085 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-03-10 23:38:10,432 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-03-10 23:38:10,736 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-03-10 23:38:11,192 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-03-10 23:38:11,718 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2021-03-10 23:38:12,121 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-03-10 23:38:12,509 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-03-10 23:38:12,941 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-03-10 23:38:13,369 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-03-10 23:38:13,678 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-03-10 23:38:14,474 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2021-03-10 23:38:14,869 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:38:15,307 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-03-10 23:38:16,013 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-03-10 23:38:16,382 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-03-10 23:38:16,712 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 23:38:17,466 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 23:38:17,804 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 23:38:18,170 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-03-10 23:38:18,498 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-03-10 23:38:18,848 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-03-10 23:38:19,317 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-03-10 23:38:19,794 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-03-10 23:38:20,616 WARN L205 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-03-10 23:38:20,835 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 23:38:21,654 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-10 23:38:21,946 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-10 23:38:22,541 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-03-10 23:38:22,899 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-03-10 23:38:23,388 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-03-10 23:38:23,832 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-03-10 23:38:24,552 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2021-03-10 23:38:25,225 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-03-10 23:38:27,088 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-03-10 23:38:27,777 WARN L205 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-03-10 23:38:28,500 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 23:38:29,080 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 23:38:29,552 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-03-10 23:38:30,009 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-03-10 23:38:30,582 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-03-10 23:38:31,333 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-03-10 23:38:32,333 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-03-10 23:38:32,816 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 23:38:34,122 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-03-10 23:38:34,524 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 23:38:35,127 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-03-10 23:38:35,906 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-03-10 23:38:36,103 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-03-10 23:38:36,436 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 23:38:36,841 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-03-10 23:38:37,331 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-03-10 23:38:37,865 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-03-10 23:38:38,463 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-03-10 23:38:38,969 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-03-10 23:38:39,419 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 23:38:39,869 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 23:38:40,156 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 23:38:40,647 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-03-10 23:38:41,177 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-03-10 23:38:41,428 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 23:38:41,981 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 23:38:42,480 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-03-10 23:38:42,993 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-03-10 23:38:43,794 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-03-10 23:38:44,315 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-03-10 23:38:44,801 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 23:38:45,213 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-03-10 23:38:45,647 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-03-10 23:38:46,326 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-03-10 23:38:46,846 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-03-10 23:38:47,197 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 23:38:47,767 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-03-10 23:38:48,216 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-03-10 23:38:48,742 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-10 23:38:49,724 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-03-10 23:38:50,161 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-03-10 23:38:50,579 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-03-10 23:38:50,978 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-03-10 23:38:51,529 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-03-10 23:38:52,031 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-03-10 23:38:52,574 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 23:38:52,902 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 23:38:53,224 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 23:38:53,756 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-03-10 23:38:54,281 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-03-10 23:38:54,597 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-03-10 23:38:54,893 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-03-10 23:38:55,798 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-03-10 23:38:56,187 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-03-10 23:38:56,405 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 23:38:56,723 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:38:57,274 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-03-10 23:38:57,609 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-03-10 23:38:57,970 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 23:38:58,268 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 23:38:58,540 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-03-10 23:38:58,870 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-03-10 23:38:59,165 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-03-10 23:38:59,411 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-03-10 23:38:59,587 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-03-10 23:39:00,228 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-03-10 23:39:00,801 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-03-10 23:39:01,294 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-03-10 23:39:01,651 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-03-10 23:39:01,937 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 23:39:02,181 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 23:39:02,347 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-03-10 23:39:02,665 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-03-10 23:39:03,404 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-03-10 23:39:03,708 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-03-10 23:39:04,113 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-03-10 23:39:04,314 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 23:39:05,137 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-03-10 23:39:05,707 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-03-10 23:39:06,172 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:39:06,598 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-03-10 23:39:06,868 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 23:39:07,048 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-03-10 23:39:07,493 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 23:39:08,133 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-03-10 23:39:08,675 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-03-10 23:39:09,018 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-03-10 23:39:09,536 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:39:09,981 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 23:39:10,947 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 23:39:11,797 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 23:39:12,419 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 23:39:12,681 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-03-10 23:39:13,100 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 23:39:13,483 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-03-10 23:39:13,935 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:39:14,214 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-03-10 23:39:14,673 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-03-10 23:39:14,833 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 23:39:15,255 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-03-10 23:39:15,716 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-03-10 23:39:16,160 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-03-10 23:39:16,497 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:39:16,983 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-03-10 23:39:17,448 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-03-10 23:39:17,881 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 23:39:18,390 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-03-10 23:39:18,745 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 23:39:19,167 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-03-10 23:39:19,615 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-03-10 23:39:20,100 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-03-10 23:39:20,583 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 23:39:21,052 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-03-10 23:39:21,547 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-03-10 23:39:22,058 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 23:39:22,566 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-03-10 23:39:23,133 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 23:39:23,629 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 23:39:24,389 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-03-10 23:39:24,902 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-03-10 23:39:25,437 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-03-10 23:39:25,959 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 23:39:26,420 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-03-10 23:39:26,882 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 23:39:27,485 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-03-10 23:39:28,713 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-03-10 23:39:29,248 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-03-10 23:39:29,795 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 23:39:31,224 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 23:39:31,487 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 23:39:31,925 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 23:39:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:39:31,990 INFO L93 Difference]: Finished difference Result 197595 states and 597318 transitions. [2021-03-10 23:39:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2021-03-10 23:39:31,993 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:39:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:39:32,446 INFO L225 Difference]: With dead ends: 197595 [2021-03-10 23:39:32,447 INFO L226 Difference]: Without dead ends: 196131 [2021-03-10 23:39:32,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80981 ImplicationChecksByTransitivity, 107915.1ms TimeCoverageRelationStatistics Valid=27392, Invalid=142764, Unknown=0, NotChecked=0, Total=170156 [2021-03-10 23:39:32,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196131 states. [2021-03-10 23:39:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196131 to 101960. [2021-03-10 23:39:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101960 states, 101959 states have (on average 3.082847026746045) internal successors, (314324), 101959 states have internal predecessors, (314324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:39:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101960 states to 101960 states and 314324 transitions. [2021-03-10 23:39:36,031 INFO L78 Accepts]: Start accepts. Automaton has 101960 states and 314324 transitions. Word has length 56 [2021-03-10 23:39:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:39:36,032 INFO L480 AbstractCegarLoop]: Abstraction has 101960 states and 314324 transitions. [2021-03-10 23:39:36,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:39:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 101960 states and 314324 transitions. [2021-03-10 23:39:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:39:36,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:39:36,216 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:39:36,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:39:36,416 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:39:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:39:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1673280893, now seen corresponding path program 33 times [2021-03-10 23:39:36,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:39:36,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33352586] [2021-03-10 23:39:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:39:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:39:36,984 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 23:39:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:39:37,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33352586] [2021-03-10 23:39:37,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568945331] [2021-03-10 23:39:37,509 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 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 [2021-03-10 23:39:37,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 23:39:37,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:39:37,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 23:39:37,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:39:37,894 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 [2021-03-10 23:39:37,898 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:37,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:39:37,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:39:37,929 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:31 [2021-03-10 23:39:39,026 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:39:39,303 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:39:39,829 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-03-10 23:39:40,119 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 23:39:40,425 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 23:39:40,936 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_33, v_prenex_28, v_prenex_26], 1=[v_prenex_30], 3=[q1, q3], 10=[v_prenex_32]} [2021-03-10 23:39:40,949 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 [2021-03-10 23:39:40,954 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:41,419 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-03-10 23:39:41,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:39:41,433 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 17 treesize of output 13 [2021-03-10 23:39:41,438 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:41,877 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-03-10 23:39:41,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:39:41,886 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 11 treesize of output 9 [2021-03-10 23:39:41,890 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:42,243 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 23:39:42,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:39:42,274 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:39:42,274 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 25 treesize of output 15 [2021-03-10 23:39:42,279 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:42,625 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 23:39:42,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:39:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:42,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:42,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:42,659 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 33 treesize of output 19 [2021-03-10 23:39:42,666 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:42,680 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:39:42,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2021-03-10 23:39:42,686 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:42,980 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 23:39:42,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:39:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:42,997 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 9 [2021-03-10 23:39:43,003 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:43,016 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:39:43,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 12 [2021-03-10 23:39:43,020 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:43,445 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-03-10 23:39:43,446 INFO L628 ElimStorePlain]: treesize reduction 35, result has 83.1 percent of original size [2021-03-10 23:39:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2021-03-10 23:39:43,504 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:43,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:39:43,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-03-10 23:39:43,568 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:43,581 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-03-10 23:39:43,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 21 [2021-03-10 23:39:43,587 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 23:39:43,771 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 23:39:43,772 INFO L628 ElimStorePlain]: treesize reduction 13, result has 78.7 percent of original size [2021-03-10 23:39:43,775 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 7 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 23:39:43,775 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 14 variables, input treesize:355, output treesize:48 [2021-03-10 23:39:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:39:44,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:39:44,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2021-03-10 23:39:44,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396440430] [2021-03-10 23:39:44,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 23:39:44,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:39:44,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 23:39:44,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 23:39:44,204 INFO L87 Difference]: Start difference. First operand 101960 states and 314324 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:39:45,456 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 23:39:48,123 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2021-03-10 23:39:48,968 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-03-10 23:39:49,526 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 23:39:50,032 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2021-03-10 23:39:50,640 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-03-10 23:39:50,878 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-03-10 23:39:51,416 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-03-10 23:39:51,984 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-03-10 23:39:52,214 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-03-10 23:39:53,028 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-03-10 23:39:53,404 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 23:39:53,804 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 23:39:54,412 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-03-10 23:39:54,813 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-03-10 23:39:55,198 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 23:39:55,732 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-03-10 23:39:56,398 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-03-10 23:39:57,207 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-03-10 23:39:57,459 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-03-10 23:39:58,560 WARN L205 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-03-10 23:39:59,453 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-03-10 23:39:59,851 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-03-10 23:40:00,318 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-03-10 23:40:01,673 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 23:40:02,121 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-03-10 23:40:02,797 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-03-10 23:40:03,718 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-03-10 23:40:03,930 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-03-10 23:40:04,471 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 23:40:04,697 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-03-10 23:40:05,064 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-03-10 23:40:05,533 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-03-10 23:40:05,808 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-03-10 23:40:06,097 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:40:06,710 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-03-10 23:40:07,347 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 23:40:07,599 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-03-10 23:40:07,884 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:40:08,055 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 23:40:08,636 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 23:40:08,960 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-03-10 23:40:09,549 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 23:40:10,119 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-03-10 23:40:10,864 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-03-10 23:40:11,313 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 23:40:12,018 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-03-10 23:40:14,477 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-03-10 23:40:15,441 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-03-10 23:40:15,796 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-03-10 23:40:16,707 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-03-10 23:40:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:40:17,276 INFO L93 Difference]: Finished difference Result 136889 states and 415966 transitions. [2021-03-10 23:40:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-03-10 23:40:17,280 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:40:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:40:17,611 INFO L225 Difference]: With dead ends: 136889 [2021-03-10 23:40:17,612 INFO L226 Difference]: Without dead ends: 131367 [2021-03-10 23:40:17,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13071 ImplicationChecksByTransitivity, 28381.0ms TimeCoverageRelationStatistics Valid=5033, Invalid=26119, Unknown=0, NotChecked=0, Total=31152 [2021-03-10 23:40:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131367 states. [2021-03-10 23:40:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131367 to 103609. [2021-03-10 23:40:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103609 states, 103608 states have (on average 3.077001775924639) internal successors, (318802), 103608 states have internal predecessors, (318802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:40:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103609 states to 103609 states and 318802 transitions. [2021-03-10 23:40:20,705 INFO L78 Accepts]: Start accepts. Automaton has 103609 states and 318802 transitions. Word has length 56 [2021-03-10 23:40:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:40:20,705 INFO L480 AbstractCegarLoop]: Abstraction has 103609 states and 318802 transitions. [2021-03-10 23:40:20,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:40:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 103609 states and 318802 transitions. [2021-03-10 23:40:20,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 23:40:20,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:40:20,868 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:40:21,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:40:21,069 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:40:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:40:21,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1260804177, now seen corresponding path program 34 times [2021-03-10 23:40:21,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:40:21,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509673792] [2021-03-10 23:40:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:40:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:40:21,556 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-03-10 23:40:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:40:22,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509673792] [2021-03-10 23:40:22,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960516314] [2021-03-10 23:40:22,167 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 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 [2021-03-10 23:40:22,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 23:40:22,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:40:22,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-10 23:40:22,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:40:22,472 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 [2021-03-10 23:40:22,475 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:22,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:40:22,498 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:40:22,498 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:29 [2021-03-10 23:40:23,007 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-03-10 23:40:23,347 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-03-10 23:40:24,023 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-03-10 23:40:24,238 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 23:40:24,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:24,322 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 30 treesize of output 18 [2021-03-10 23:40:24,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:24,344 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 30 treesize of output 18 [2021-03-10 23:40:24,349 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:24,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:24,694 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 36 treesize of output 20 [2021-03-10 23:40:24,697 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:24,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:24,711 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 15 [2021-03-10 23:40:24,715 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:24,727 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:40:24,727 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 36 treesize of output 20 [2021-03-10 23:40:24,730 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:24,926 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-03-10 23:40:24,927 INFO L628 ElimStorePlain]: treesize reduction 79, result has 60.9 percent of original size [2021-03-10 23:40:24,929 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:40:24,929 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:312, output treesize:123 [2021-03-10 23:40:25,462 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-03-10 23:40:25,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-03-10 23:40:25,527 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,547 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 25 treesize of output 13 [2021-03-10 23:40:25,552 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:40:25,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-03-10 23:40:25,584 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:25,593 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-03-10 23:40:25,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 39 treesize of output 19 [2021-03-10 23:40:25,598 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:40:25,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:40:25,662 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 23:40:25,663 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:169, output treesize:54 [2021-03-10 23:40:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:40:26,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:40:26,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-03-10 23:40:26,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283914195] [2021-03-10 23:40:26,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 23:40:26,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:40:26,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 23:40:26,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1215, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 23:40:26,052 INFO L87 Difference]: Start difference. First operand 103609 states and 318802 transitions. Second operand has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 38 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:40:28,780 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-03-10 23:40:29,999 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2021-03-10 23:40:30,992 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-03-10 23:40:31,420 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-03-10 23:40:32,089 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-03-10 23:40:32,431 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-03-10 23:40:32,678 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-03-10 23:40:33,321 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-03-10 23:40:33,727 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-03-10 23:40:34,366 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-03-10 23:40:34,917 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-03-10 23:40:35,186 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-03-10 23:40:35,775 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-03-10 23:40:36,131 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-03-10 23:40:36,340 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:40:36,651 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-03-10 23:40:36,848 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-03-10 23:40:37,442 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-03-10 23:40:37,920 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-03-10 23:40:38,409 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2021-03-10 23:40:38,979 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-03-10 23:40:39,916 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2021-03-10 23:40:40,368 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-03-10 23:40:40,591 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-03-10 23:40:41,208 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2021-03-10 23:40:41,401 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 23:40:41,606 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-03-10 23:40:42,053 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-03-10 23:40:42,476 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-03-10 23:40:43,031 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-03-10 23:40:43,562 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-03-10 23:40:44,136 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2021-03-10 23:40:44,953 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 23:40:46,229 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-03-10 23:40:46,624 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-03-10 23:40:46,813 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-03-10 23:40:47,122 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 23:40:48,111 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-03-10 23:40:48,491 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-03-10 23:40:48,756 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-03-10 23:40:48,958 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-03-10 23:40:49,713 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-03-10 23:40:50,552 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2021-03-10 23:40:50,923 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-03-10 23:40:51,701 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:40:53,059 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2021-03-10 23:40:53,404 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 23:40:53,979 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 23:40:55,065 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 23:40:55,710 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 23:40:56,526 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 23:40:56,885 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 23:40:57,625 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 23:40:58,134 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2021-03-10 23:40:58,453 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-03-10 23:40:58,735 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 23:40:59,569 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 23:41:00,341 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 23:41:00,725 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-03-10 23:41:01,068 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-03-10 23:41:02,674 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-03-10 23:41:03,375 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-03-10 23:41:03,669 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-03-10 23:41:03,979 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 23:41:04,396 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-03-10 23:41:05,103 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-03-10 23:41:06,078 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-03-10 23:41:06,597 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-03-10 23:41:07,023 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-03-10 23:41:08,177 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-03-10 23:41:08,583 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-03-10 23:41:08,799 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 23:41:09,848 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-03-10 23:41:10,033 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:41:10,712 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-03-10 23:41:11,263 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 23:41:11,969 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 23:41:12,173 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-03-10 23:41:12,583 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-03-10 23:41:12,776 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-03-10 23:41:13,616 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 23:41:14,457 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-03-10 23:41:14,717 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-03-10 23:41:16,243 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 23:41:16,516 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-03-10 23:41:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:41:19,651 INFO L93 Difference]: Finished difference Result 245324 states and 739880 transitions. [2021-03-10 23:41:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2021-03-10 23:41:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 38 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 23:41:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:41:20,203 INFO L225 Difference]: With dead ends: 245324 [2021-03-10 23:41:20,204 INFO L226 Difference]: Without dead ends: 245003 [2021-03-10 23:41:20,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47313 ImplicationChecksByTransitivity, 42989.8ms TimeCoverageRelationStatistics Valid=15947, Invalid=84859, Unknown=0, NotChecked=0, Total=100806 [2021-03-10 23:41:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245003 states. [2021-03-10 23:41:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245003 to 107985. [2021-03-10 23:41:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107985 states, 107984 states have (on average 3.0819380648985035) internal successors, (332800), 107984 states have internal predecessors, (332800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107985 states to 107985 states and 332800 transitions. [2021-03-10 23:41:24,259 INFO L78 Accepts]: Start accepts. Automaton has 107985 states and 332800 transitions. Word has length 56 [2021-03-10 23:41:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:41:24,260 INFO L480 AbstractCegarLoop]: Abstraction has 107985 states and 332800 transitions. [2021-03-10 23:41:24,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 38 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 107985 states and 332800 transitions. [2021-03-10 23:41:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-03-10 23:41:24,455 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:41:24,455 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:41:24,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-03-10 23:41:24,671 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:41:24,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:41:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1271507299, now seen corresponding path program 35 times [2021-03-10 23:41:24,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:41:24,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548099954] [2021-03-10 23:41:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:41:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:41:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:41:25,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548099954] [2021-03-10 23:41:25,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477925083] [2021-03-10 23:41:25,003 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 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 [2021-03-10 23:41:25,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 23:41:25,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:41:25,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 23:41:25,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:41:25,666 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-03-10 23:41:25,886 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-03-10 23:41:26,676 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-03-10 23:41:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-10 23:41:26,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:41:26,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-03-10 23:41:26,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418649828] [2021-03-10 23:41:26,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 23:41:26,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:41:26,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 23:41:26,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-03-10 23:41:26,764 INFO L87 Difference]: Start difference. First operand 107985 states and 332800 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:27,915 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2021-03-10 23:41:28,925 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-03-10 23:41:29,645 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-03-10 23:41:29,876 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-03-10 23:41:30,229 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-03-10 23:41:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:41:31,980 INFO L93 Difference]: Finished difference Result 302017 states and 931236 transitions. [2021-03-10 23:41:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 23:41:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-03-10 23:41:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:41:32,662 INFO L225 Difference]: With dead ends: 302017 [2021-03-10 23:41:32,662 INFO L226 Difference]: Without dead ends: 302017 [2021-03-10 23:41:32,663 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 3910.9ms TimeCoverageRelationStatistics Valid=430, Invalid=1732, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 23:41:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302017 states. [2021-03-10 23:41:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302017 to 153719. [2021-03-10 23:41:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153719 states, 153718 states have (on average 3.080016653872676) internal successors, (473454), 153718 states have internal predecessors, (473454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153719 states to 153719 states and 473454 transitions. [2021-03-10 23:41:37,639 INFO L78 Accepts]: Start accepts. Automaton has 153719 states and 473454 transitions. Word has length 58 [2021-03-10 23:41:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:41:37,639 INFO L480 AbstractCegarLoop]: Abstraction has 153719 states and 473454 transitions. [2021-03-10 23:41:37,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 153719 states and 473454 transitions. [2021-03-10 23:41:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-03-10 23:41:37,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:41:37,921 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:41:38,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2021-03-10 23:41:38,122 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:41:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:41:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1936359503, now seen corresponding path program 36 times [2021-03-10 23:41:38,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:41:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125666368] [2021-03-10 23:41:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:41:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:41:38,414 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-10 23:41:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-10 23:41:38,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125666368] [2021-03-10 23:41:38,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483943927] [2021-03-10 23:41:38,529 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 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 [2021-03-10 23:41:38,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 23:41:38,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:41:38,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 23:41:38,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:41:39,024 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 23:41:39,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:41:39,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:41:39,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 23:41:39,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:41:39,478 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 25 treesize of output 13 [2021-03-10 23:41:39,481 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:41:39,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:41:39,493 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:41:39,493 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:3 [2021-03-10 23:41:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-10 23:41:39,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:41:39,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 23:41:39,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319941940] [2021-03-10 23:41:39,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 23:41:39,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:41:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 23:41:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-03-10 23:41:39,569 INFO L87 Difference]: Start difference. First operand 153719 states and 473454 transitions. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:40,196 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-03-10 23:41:40,583 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-03-10 23:41:41,204 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-03-10 23:41:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:41:43,392 INFO L93 Difference]: Finished difference Result 262234 states and 806294 transitions. [2021-03-10 23:41:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 23:41:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-03-10 23:41:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:41:44,030 INFO L225 Difference]: With dead ends: 262234 [2021-03-10 23:41:44,030 INFO L226 Difference]: Without dead ends: 262234 [2021-03-10 23:41:44,031 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1959.1ms TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 23:41:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262234 states. [2021-03-10 23:41:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262234 to 148804. [2021-03-10 23:41:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148804 states, 148803 states have (on average 3.080656976001828) internal successors, (458411), 148803 states have internal predecessors, (458411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148804 states to 148804 states and 458411 transitions. [2021-03-10 23:41:48,069 INFO L78 Accepts]: Start accepts. Automaton has 148804 states and 458411 transitions. Word has length 58 [2021-03-10 23:41:48,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:41:48,069 INFO L480 AbstractCegarLoop]: Abstraction has 148804 states and 458411 transitions. [2021-03-10 23:41:48,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 148804 states and 458411 transitions. [2021-03-10 23:41:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-03-10 23:41:48,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:41:48,945 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:41:49,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 23:41:49,146 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:41:49,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:41:49,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1407352233, now seen corresponding path program 37 times [2021-03-10 23:41:49,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:41:49,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913349866] [2021-03-10 23:41:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:41:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:41:49,972 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-03-10 23:41:50,146 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2021-03-10 23:41:50,987 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2021-03-10 23:41:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:41:51,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913349866] [2021-03-10 23:41:51,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232789028] [2021-03-10 23:41:51,849 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 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 [2021-03-10 23:41:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:41:51,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 23:41:51,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:41:52,460 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-03-10 23:41:53,087 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-03-10 23:41:53,410 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:41:53,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:41:53,415 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:41:53,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:41:53,419 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:41:53,419 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-03-10 23:41:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-03-10 23:41:53,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:41:53,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 39 [2021-03-10 23:41:53,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984017179] [2021-03-10 23:41:53,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 23:41:53,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:41:53,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 23:41:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 23:41:53,608 INFO L87 Difference]: Start difference. First operand 148804 states and 458411 transitions. Second operand has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:41:54,183 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-03-10 23:41:54,622 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-03-10 23:41:55,080 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-03-10 23:41:55,717 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-03-10 23:41:55,942 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-03-10 23:41:56,799 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-03-10 23:41:57,075 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-03-10 23:41:57,795 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-03-10 23:41:58,099 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-03-10 23:41:58,327 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2021-03-10 23:41:58,661 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 23:41:58,917 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-03-10 23:41:59,471 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2021-03-10 23:41:59,781 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-03-10 23:42:00,211 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-03-10 23:42:00,890 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 23:42:01,464 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2021-03-10 23:42:01,883 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2021-03-10 23:42:02,517 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-03-10 23:42:02,934 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 23:42:03,537 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-03-10 23:42:03,989 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-03-10 23:42:04,331 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-03-10 23:42:04,698 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-03-10 23:42:04,871 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-03-10 23:42:05,389 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-03-10 23:42:05,601 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 23:42:06,319 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-03-10 23:42:06,939 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-03-10 23:42:07,289 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-10 23:42:08,298 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 23:42:08,549 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-03-10 23:42:08,997 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-03-10 23:42:09,183 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-03-10 23:42:09,572 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-03-10 23:42:09,773 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-03-10 23:42:10,142 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-03-10 23:42:10,656 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-03-10 23:42:10,936 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-03-10 23:42:11,708 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-03-10 23:42:11,996 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 23:42:12,309 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-03-10 23:42:12,727 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-03-10 23:42:13,020 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-03-10 23:42:13,295 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-03-10 23:42:13,984 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-03-10 23:42:14,744 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-03-10 23:42:15,006 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-03-10 23:42:15,232 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-03-10 23:42:15,433 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-03-10 23:42:15,734 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-03-10 23:42:16,060 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 23:42:16,674 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-03-10 23:42:16,951 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-03-10 23:42:17,304 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-10 23:42:17,722 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-03-10 23:42:17,976 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-03-10 23:42:18,355 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 23:42:19,389 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-03-10 23:42:19,611 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-03-10 23:42:19,898 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-03-10 23:42:20,252 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-03-10 23:42:20,592 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-03-10 23:42:20,954 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-03-10 23:42:21,513 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-03-10 23:42:21,809 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-03-10 23:42:22,110 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-03-10 23:42:22,575 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-03-10 23:42:23,026 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-03-10 23:42:23,375 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 23:42:23,631 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-03-10 23:42:24,270 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-03-10 23:42:24,458 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-03-10 23:42:24,709 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-03-10 23:42:25,016 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-03-10 23:42:25,395 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-03-10 23:42:25,701 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-03-10 23:42:25,964 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-03-10 23:42:26,255 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-03-10 23:42:26,582 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-03-10 23:42:27,119 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-03-10 23:42:27,327 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 23:42:28,087 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-10 23:42:28,515 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-03-10 23:42:28,733 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 23:42:29,733 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-03-10 23:42:30,306 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-03-10 23:42:30,720 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 23:42:31,217 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-03-10 23:42:31,457 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-03-10 23:42:31,723 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-03-10 23:42:32,086 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-03-10 23:42:32,297 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-03-10 23:42:32,835 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 23:42:33,837 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 23:42:34,200 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-03-10 23:42:34,477 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-03-10 23:42:34,813 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-03-10 23:42:35,052 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-03-10 23:42:35,683 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 23:42:36,298 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-03-10 23:42:36,603 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-03-10 23:42:36,877 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-03-10 23:42:37,183 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-03-10 23:42:37,480 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-03-10 23:42:37,981 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 23:42:38,253 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 23:42:39,305 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-10 23:42:39,558 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-03-10 23:42:39,786 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 23:42:42,500 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 23:42:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:42:43,414 INFO L93 Difference]: Finished difference Result 367645 states and 1118710 transitions. [2021-03-10 23:42:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2021-03-10 23:42:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-03-10 23:42:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:42:44,167 INFO L225 Difference]: With dead ends: 367645 [2021-03-10 23:42:44,167 INFO L226 Difference]: Without dead ends: 367645 [2021-03-10 23:42:44,169 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20529 ImplicationChecksByTransitivity, 38743.6ms TimeCoverageRelationStatistics Valid=6942, Invalid=45270, Unknown=0, NotChecked=0, Total=52212 [2021-03-10 23:42:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367645 states. [2021-03-10 23:42:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367645 to 154451. [2021-03-10 23:42:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154451 states, 154450 states have (on average 3.0839559728067334) internal successors, (476317), 154450 states have internal predecessors, (476317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:42:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154451 states to 154451 states and 476317 transitions. [2021-03-10 23:42:49,343 INFO L78 Accepts]: Start accepts. Automaton has 154451 states and 476317 transitions. Word has length 60 [2021-03-10 23:42:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:42:49,343 INFO L480 AbstractCegarLoop]: Abstraction has 154451 states and 476317 transitions. [2021-03-10 23:42:49,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:42:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 154451 states and 476317 transitions. [2021-03-10 23:42:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-03-10 23:42:49,600 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:42:49,600 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:42:49,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2021-03-10 23:42:49,801 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:42:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:42:49,801 INFO L82 PathProgramCache]: Analyzing trace with hash 663756702, now seen corresponding path program 38 times [2021-03-10 23:42:49,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:42:49,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583201540] [2021-03-10 23:42:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:42:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:42:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 23:42:52,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583201540] [2021-03-10 23:42:52,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595779134] [2021-03-10 23:42:52,658 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 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 [2021-03-10 23:42:52,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 23:42:52,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:42:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-10 23:42:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:42:53,906 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-03-10 23:42:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:54,096 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 43 treesize of output 31 [2021-03-10 23:42:54,100 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:54,111 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-10 23:42:54,111 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 43 treesize of output 31 [2021-03-10 23:42:54,115 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:54,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:42:54,211 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-10 23:42:54,211 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:115 [2021-03-10 23:42:54,600 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 23:42:55,057 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-03-10 23:42:55,362 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 23:42:55,745 INFO L446 ElimStorePlain]: Different costs {1=[q3], 3=[v_prenex_40], 10=[q1]} [2021-03-10 23:42:55,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:55,759 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 30 treesize of output 18 [2021-03-10 23:42:55,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:55,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:55,774 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 15 [2021-03-10 23:42:55,779 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:55,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:55,793 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 36 treesize of output 20 [2021-03-10 23:42:55,796 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:55,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:55,814 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 36 treesize of output 20 [2021-03-10 23:42:55,818 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:55,834 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-03-10 23:42:55,835 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 30 treesize of output 18 [2021-03-10 23:42:55,840 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:56,211 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-03-10 23:42:56,212 INFO L628 ElimStorePlain]: treesize reduction 51, result has 79.7 percent of original size [2021-03-10 23:42:56,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,228 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 41 treesize of output 23 [2021-03-10 23:42:56,233 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:56,514 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-03-10 23:42:56,516 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.0 percent of original size [2021-03-10 23:42:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-10 23:42:56,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2021-03-10 23:42:56,576 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:56,587 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-03-10 23:42:56,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2021-03-10 23:42:56,594 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 23:42:56,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:42:56,679 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 23:42:56,679 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:359, output treesize:44 [2021-03-10 23:42:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-03-10 23:42:57,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:42:57,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21] total 43 [2021-03-10 23:42:57,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638638442] [2021-03-10 23:42:57,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-03-10 23:42:57,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:42:57,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-03-10 23:42:57,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1615, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 23:42:57,493 INFO L87 Difference]: Start difference. First operand 154451 states and 476317 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 43 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:42:58,051 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-03-10 23:42:58,440 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-03-10 23:42:58,644 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 23:43:00,204 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-03-10 23:43:00,404 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-03-10 23:43:01,363 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-03-10 23:43:02,641 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-03-10 23:43:03,074 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2021-03-10 23:43:03,730 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 23:43:05,582 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-03-10 23:43:06,026 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-03-10 23:43:06,302 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-03-10 23:43:06,654 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-03-10 23:43:06,926 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-03-10 23:43:08,277 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-03-10 23:43:09,287 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-10 23:43:10,946 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-03-10 23:43:11,214 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2021-03-10 23:43:11,855 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2021-03-10 23:43:12,283 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-03-10 23:43:13,040 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-03-10 23:43:13,807 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-03-10 23:43:14,411 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-10 23:43:15,066 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-03-10 23:43:16,026 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-03-10 23:43:16,396 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-03-10 23:43:17,132 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-03-10 23:43:17,843 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-03-10 23:43:18,456 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-03-10 23:43:18,906 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-03-10 23:43:19,819 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-03-10 23:43:20,364 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-10 23:43:20,991 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 23:43:21,656 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-03-10 23:43:22,302 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-03-10 23:43:22,771 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-03-10 23:43:23,553 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-03-10 23:43:23,865 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:43:24,213 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:43:24,742 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-03-10 23:43:25,307 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 23:43:25,767 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-03-10 23:43:26,113 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-03-10 23:43:26,615 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-03-10 23:43:27,512 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-03-10 23:43:27,839 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 23:43:28,179 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2021-03-10 23:43:28,468 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:43:29,159 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-03-10 23:43:29,457 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:43:30,709 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2021-03-10 23:43:30,910 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-03-10 23:43:31,346 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2021-03-10 23:43:32,177 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 23:43:32,664 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-03-10 23:43:32,997 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-03-10 23:43:33,258 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 23:43:33,927 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 23:43:34,999 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-03-10 23:43:36,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 23:43:36,289 INFO L93 Difference]: Finished difference Result 248406 states and 757616 transitions. [2021-03-10 23:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-03-10 23:43:36,293 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 43 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-03-10 23:43:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 23:43:36,773 INFO L225 Difference]: With dead ends: 248406 [2021-03-10 23:43:36,773 INFO L226 Difference]: Without dead ends: 247231 [2021-03-10 23:43:36,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8368 ImplicationChecksByTransitivity, 28342.2ms TimeCoverageRelationStatistics Valid=2679, Invalid=21501, Unknown=0, NotChecked=0, Total=24180 [2021-03-10 23:43:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247231 states. [2021-03-10 23:43:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247231 to 155903. [2021-03-10 23:43:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155903 states, 155902 states have (on average 3.0844569024130544) internal successors, (480873), 155902 states have internal predecessors, (480873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:43:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155903 states to 155903 states and 480873 transitions. [2021-03-10 23:43:41,649 INFO L78 Accepts]: Start accepts. Automaton has 155903 states and 480873 transitions. Word has length 61 [2021-03-10 23:43:41,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 23:43:41,649 INFO L480 AbstractCegarLoop]: Abstraction has 155903 states and 480873 transitions. [2021-03-10 23:43:41,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 43 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:43:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 155903 states and 480873 transitions. [2021-03-10 23:43:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-03-10 23:43:41,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 23:43:41,930 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 23:43:42,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2021-03-10 23:43:42,131 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 23:43:42,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 23:43:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash -779192550, now seen corresponding path program 39 times [2021-03-10 23:43:42,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 23:43:42,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957765710] [2021-03-10 23:43:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 23:43:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 23:43:42,896 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2021-03-10 23:43:43,063 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 23:43:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 23:43:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957765710] [2021-03-10 23:43:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311822137] [2021-03-10 23:43:44,681 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 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 [2021-03-10 23:43:44,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 23:43:44,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 23:43:44,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 23:43:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 23:43:45,938 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 23:43:46,988 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-03-10 23:43:46,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-03-10 23:43:46,994 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:43:47,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:43:47,006 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:43:47,006 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:7 [2021-03-10 23:43:47,225 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 11 treesize of output 7 [2021-03-10 23:43:47,229 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 23:43:47,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 23:43:47,234 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-10 23:43:47,235 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-03-10 23:43:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-10 23:43:47,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 23:43:47,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18] total 46 [2021-03-10 23:43:47,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078830108] [2021-03-10 23:43:47,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-03-10 23:43:47,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 23:43:47,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-03-10 23:43:47,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1791, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 23:43:47,390 INFO L87 Difference]: Start difference. First operand 155903 states and 480873 transitions. Second operand has 47 states, 47 states have (on average 2.5319148936170213) internal successors, (119), 46 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 23:43:48,180 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-03-10 23:43:49,064 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-03-10 23:43:49,789 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-03-10 23:43:50,863 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-03-10 23:43:51,146 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-03-10 23:43:52,971 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-03-10 23:43:53,260 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-03-10 23:43:53,628 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:43:53,930 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:43:54,371 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-03-10 23:43:55,038 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-03-10 23:43:55,257 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-03-10 23:43:55,867 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-03-10 23:43:57,116 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:43:57,399 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-03-10 23:43:57,564 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-03-10 23:43:58,276 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-03-10 23:43:58,431 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-03-10 23:43:59,248 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-03-10 23:43:59,452 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:43:59,657 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 23:43:59,925 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-03-10 23:44:00,399 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-03-10 23:44:00,846 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-03-10 23:44:01,515 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2021-03-10 23:44:01,746 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2021-03-10 23:44:02,003 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-03-10 23:44:02,493 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-03-10 23:44:02,830 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-03-10 23:44:02,995 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:44:03,335 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-03-10 23:44:03,827 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-03-10 23:44:04,222 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-03-10 23:44:04,490 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 23:44:04,823 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-03-10 23:44:05,851 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2021-03-10 23:44:06,020 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-03-10 23:44:07,001 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 23:44:07,475 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 23:44:07,663 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:44:08,128 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-03-10 23:44:08,522 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-03-10 23:44:08,889 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2021-03-10 23:44:09,153 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-03-10 23:44:09,815 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-03-10 23:44:10,506 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-03-10 23:44:11,044 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-03-10 23:44:11,406 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-03-10 23:44:12,128 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-03-10 23:44:12,912 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-03-10 23:44:13,098 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:44:13,883 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 23:44:14,068 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2021-03-10 23:44:14,261 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-03-10 23:44:14,824 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-03-10 23:44:15,056 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 23:44:15,294 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-03-10 23:44:15,487 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-03-10 23:44:15,667 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-03-10 23:44:16,020 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:44:16,461 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-03-10 23:44:16,713 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-03-10 23:44:17,094 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-03-10 23:44:17,808 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 23:44:18,103 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:44:18,432 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-03-10 23:44:19,010 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-03-10 23:44:19,228 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:44:19,591 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-03-10 23:44:20,212 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 23:44:20,663 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-03-10 23:44:20,895 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:44:21,167 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-03-10 23:44:21,466 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2021-03-10 23:44:21,681 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2021-03-10 23:44:22,487 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-03-10 23:44:23,670 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-03-10 23:44:24,380 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 23:44:24,607 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 23:44:24,969 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-03-10 23:44:25,131 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2021-03-10 23:44:25,597 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:44:25,895 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 23:44:26,183 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 23:44:27,078 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-03-10 23:44:27,289 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2021-03-10 23:44:27,678 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 23:44:28,120 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2021-03-10 23:44:28,787 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 23:44:29,845 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-03-10 23:44:30,636 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 23:44:31,031 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:44:31,661 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-03-10 23:44:32,364 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:44:33,956 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:44:34,229 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 23:44:35,118 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-03-10 23:44:35,332 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:44:36,165 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-03-10 23:44:36,347 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:44:37,087 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2021-03-10 23:44:37,752 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-10 23:44:38,095 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:44:38,604 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-03-10 23:44:39,710 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-03-10 23:44:40,303 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 23:44:41,482 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-03-10 23:44:42,469 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:44:43,401 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-03-10 23:44:43,703 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-03-10 23:44:44,584 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-03-10 23:44:44,834 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-03-10 23:44:45,449 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-03-10 23:44:47,495 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-03-10 23:44:47,708 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 23:44:48,491 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-03-10 23:44:48,901 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 23:44:49,255 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-03-10 23:44:49,471 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-03-10 23:44:50,091 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:44:50,338 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2021-03-10 23:44:50,807 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2021-03-10 23:44:51,056 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:44:51,597 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-03-10 23:44:52,059 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 23:44:52,423 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-03-10 23:44:52,664 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 23:44:53,034 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 23:44:53,593 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 23:44:53,965 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-03-10 23:44:54,305 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:44:55,230 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 22 [2021-03-10 23:44:55,571 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-03-10 23:44:56,011 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-03-10 23:44:56,578 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-03-10 23:44:57,049 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-03-10 23:44:57,249 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:44:57,947 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-03-10 23:44:58,629 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-03-10 23:44:58,792 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 23:44:59,121 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-03-10 23:44:59,467 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 23:45:00,624 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-03-10 23:45:00,967 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-03-10 23:45:01,469 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2021-03-10 23:45:01,676 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-03-10 23:45:02,205 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-03-10 23:45:02,617 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-03-10 23:45:03,298 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-03-10 23:45:03,509 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-03-10 23:45:03,715 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 23:45:04,032 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-03-10 23:45:04,244 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 23:45:04,617 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-03-10 23:45:04,863 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-03-10 23:45:05,068 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 23:45:05,462 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-03-10 23:45:06,133 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-03-10 23:45:06,480 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 23:45:06,905 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 23:45:07,092 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 23:45:07,312 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 23:45:07,552 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:45:07,819 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2021-03-10 23:45:08,137 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:45:08,398 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:45:08,996 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-03-10 23:45:09,794 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 23:45:10,285 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-03-10 23:45:10,655 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-03-10 23:45:10,874 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-03-10 23:45:11,528 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-03-10 23:45:11,873 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 23:45:12,320 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-03-10 23:45:12,695 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-03-10 23:45:13,023 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-03-10 23:45:13,389 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-03-10 23:45:13,653 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 23:45:13,895 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 23:45:14,391 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 23:45:14,770 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-03-10 23:45:15,052 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 23:45:15,363 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 23:45:16,023 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-03-10 23:45:16,235 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-03-10 23:45:16,697 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-03-10 23:45:16,891 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 23:45:17,457 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-03-10 23:45:17,775 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:45:18,236 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-03-10 23:45:18,663 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-03-10 23:45:18,871 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:45:19,381 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 23:45:20,057 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-03-10 23:45:20,610 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-03-10 23:45:21,106 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-03-10 23:45:21,542 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 23:45:22,351 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-03-10 23:45:22,795 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 23:45:23,261 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-03-10 23:45:23,944 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-03-10 23:45:24,560 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-03-10 23:45:25,021 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-03-10 23:45:25,269 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-03-10 23:45:25,596 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-03-10 23:45:25,872 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:45:26,068 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 23:45:26,433 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2021-03-10 23:45:26,807 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 23:45:27,012 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 23:45:27,418 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 23:45:27,837 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 23:45:28,113 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 23:45:28,612 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:45:28,811 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 23:45:29,055 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 23:45:29,485 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-03-10 23:45:29,936 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-03-10 23:45:30,622 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-03-10 23:45:30,816 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-03-10 23:45:31,036 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-03-10 23:45:31,584 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-03-10 23:45:31,811 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 23:45:32,065 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 23:45:32,344 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-03-10 23:45:32,782 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 23:45:33,281 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-03-10 23:45:33,986 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 23:45:34,196 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 23:45:34,780 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:45:35,360 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-03-10 23:45:35,536 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 23:45:35,883 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 23:45:36,368 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-03-10 23:45:36,864 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-03-10 23:45:37,294 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 23:45:37,520 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:45:37,900 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-03-10 23:45:38,346 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-03-10 23:45:38,565 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 23:45:38,959 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-03-10 23:45:39,187 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:45:39,525 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-03-10 23:45:39,725 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 23:45:40,103 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-03-10 23:45:40,500 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-03-10 23:45:40,990 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-03-10 23:45:41,392 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-03-10 23:45:41,614 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 23:45:42,051 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-03-10 23:45:42,295 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 23:45:42,556 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 23:45:42,818 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 23:45:43,348 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-03-10 23:45:43,794 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-03-10 23:45:44,020 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:45:44,246 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:45:44,739 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-03-10 23:45:45,535 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 23:45:45,871 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-03-10 23:45:46,761 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-03-10 23:45:47,240 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-03-10 23:45:48,962 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 23:45:49,148 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:45:49,421 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 23:45:49,781 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:45:49,968 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 23:45:50,248 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 23:45:50,587 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 23:45:51,248 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-03-10 23:45:51,432 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 23:45:52,920 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 23:45:53,113 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 23:45:53,535 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-10 23:45:53,731 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 23:45:54,039 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-03-10 23:45:54,377 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-03-10 23:45:54,662 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:45:55,290 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 23:45:55,479 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-10 23:45:55,927 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-03-10 23:45:56,113 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 Received shutdown request... [2021-03-10 23:45:56,980 WARN L222 SmtUtils]: Removed 2 from assertion stack [2021-03-10 23:45:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 548 states. [2021-03-10 23:45:57,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable319 [2021-03-10 23:45:57,181 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 23:45:57,184 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 23:45:57,184 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 11:45:57 BasicIcfg [2021-03-10 23:45:57,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 23:45:57,185 INFO L168 Benchmark]: Toolchain (without parser) took 766396.82 ms. Allocated memory was 255.9 MB in the beginning and 13.0 GB in the end (delta: 12.7 GB). Free memory was 236.3 MB in the beginning and 7.4 GB in the end (delta: -7.2 GB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. [2021-03-10 23:45:57,185 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 23:45:57,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 255.9 MB. Free memory was 235.8 MB in the beginning and 234.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 23:45:57,185 INFO L168 Benchmark]: Boogie Preprocessor took 29.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 23:45:57,194 INFO L168 Benchmark]: RCFGBuilder took 411.01 ms. Allocated memory is still 255.9 MB. Free memory was 233.1 MB in the beginning and 231.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-10 23:45:57,194 INFO L168 Benchmark]: TraceAbstraction took 765907.57 ms. Allocated memory was 255.9 MB in the beginning and 13.0 GB in the end (delta: 12.7 GB). Free memory was 230.6 MB in the beginning and 7.4 GB in the end (delta: -7.2 GB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. [2021-03-10 23:45:57,195 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 255.9 MB. Free memory was 235.8 MB in the beginning and 234.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 411.01 ms. Allocated memory is still 255.9 MB. Free memory was 233.1 MB in the beginning and 231.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 765907.57 ms. Allocated memory was 255.9 MB in the beginning and 13.0 GB in the end (delta: 12.7 GB). Free memory was 230.6 MB in the beginning and 7.4 GB in the end (delta: -7.2 GB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (155903states) and FLOYD_HOARE automaton (currently 548 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 26 for 36ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 765827.6ms, OverallIterations: 42, TraceHistogramMax: 7, EmptinessCheckTime: 3899.0ms, AutomataDifference: 620927.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 62.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4498 SDtfs, 28295 SDslu, 64312 SDs, 0 SdLazy, 96168 SolverSat, 8150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66990.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6314 GetRequests, 1486 SyntacticMatches, 13 SemanticMatches, 4814 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535477 ImplicationChecksByTransitivity, 494136.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=155903occurred in iteration=41, InterpolantAutomatonStates: 3806, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59508.3ms AutomataMinimizationTime, 41 MinimizatonAttempts, 1573826 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 390.1ms SsaConstructionTime, 1609.9ms SatisfiabilityAnalysisTime, 70485.2ms InterpolantComputationTime, 3791 NumberOfCodeBlocks, 3777 NumberOfCodeBlocksAsserted, 186 NumberOfCheckSat, 3712 ConstructedInterpolants, 25 QuantifiedInterpolants, 53843 SizeOfPredicates, 330 NumberOfNonLiveVariables, 4723 ConjunctsInSsa, 836 ConjunctsInUnsatCore, 79 InterpolantComputations, 5 PerfectInterpolantSequences, 868/3431 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