/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-POR-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 23:25:11,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 23:25:11,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 23:25:11,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-06 23:25:11,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-06 23:25:11,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-06 23:25:11,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-06 23:25:11,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-06 23:25:11,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-06 23:25:11,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-06 23:25:11,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-06 23:25:11,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-06 23:25:11,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 23:25:11,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 23:25:11,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 23:25:11,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 23:25:11,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 23:25:11,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 23:25:11,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 23:25:11,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 23:25:11,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 23:25:11,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 23:25:11,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 23:25:11,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 23:25:11,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-06 23:25:11,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-06 23:25:11,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-06 23:25:11,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-06 23:25:11,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-06 23:25:11,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-06 23:25:11,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-06 23:25:11,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-06 23:25:11,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-06 23:25:11,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-06 23:25:11,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-06 23:25:11,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-06 23:25:11,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-06 23:25:11,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-06 23:25:11,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 23:25:11,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 23:25:11,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 23:25:11,254 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-POR-DelaySleep-NoLbe-Random521.epf [2021-06-06 23:25:11,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 23:25:11,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 23:25:11,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 23:25:11,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 23:25:11,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 23:25:11,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 23:25:11,291 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 23:25:11,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 23:25:11,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 23:25:11,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 23:25:11,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 23:25:11,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 23:25:11,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 23:25:11,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 23:25:11,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 23:25:11,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 23:25:11,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 23:25:11,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 23:25:11,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 23:25:11,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 23:25:11,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 23:25:11,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 23:25:11,295 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 23:25:11,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 23:25:11,295 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 23:25:11,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 23:25:11,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 23:25:11,296 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 23:25:11,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 23:25:11,296 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 23:25:11,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 23:25:11,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 23:25:11,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 23:25:11,648 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 23:25:11,649 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 23:25:11,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array.wvr.bpl [2021-06-06 23:25:11,650 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array.wvr.bpl' [2021-06-06 23:25:11,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 23:25:11,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 23:25:11,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 23:25:11,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 23:25:11,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 23:25:11,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 23:25:11,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 23:25:11,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 23:25:11,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 23:25:11,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... [2021-06-06 23:25:11,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 23:25:11,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 23:25:11,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 23:25:11,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 23:25:11,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 23:25:11,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 23:25:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 23:25:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 23:25:11,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 23:25:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 23:25:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 23:25:11,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 23:25:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 23:25:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 23:25:11,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 23:25:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 23:25:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 23:25:11,803 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 23:25:12,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 23:25:12,038 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 23:25:12,039 INFO L202 PluginConnector]: Adding new model sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:25:12 BoogieIcfgContainer [2021-06-06 23:25:12,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 23:25:12,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 23:25:12,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 23:25:12,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 23:25:12,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:25:11" (1/2) ... [2021-06-06 23:25:12,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7045e93e and model type sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:25:12, skipping insertion in model container [2021-06-06 23:25:12,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:25:12" (2/2) ... [2021-06-06 23:25:12,045 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-array.wvr.bpl [2021-06-06 23:25:12,050 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 23:25:12,050 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 23:25:12,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 23:25:12,051 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 23:25:12,114 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 23:25:12,136 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 23:25:12,187 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 23:25:12,187 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 23:25:12,187 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 23:25:12,188 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 23:25:12,188 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 23:25:12,188 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 23:25:12,188 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 23:25:12,188 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 23:25:12,288 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:12,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1529172741, now seen corresponding path program 1 times [2021-06-06 23:25:12,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:12,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175278321] [2021-06-06 23:25:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:12,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:12,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175278321] [2021-06-06 23:25:12,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175278321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:25:12,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:25:12,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 23:25:12,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656146191] [2021-06-06 23:25:12,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 23:25:12,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:12,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 23:25:12,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 23:25:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:12,503 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:12,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:12,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:12,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 23:25:12,564 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1702466087, now seen corresponding path program 1 times [2021-06-06 23:25:12,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:12,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692208777] [2021-06-06 23:25:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:12,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:12,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692208777] [2021-06-06 23:25:12,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692208777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:25:12,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:25:12,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 23:25:12,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70575769] [2021-06-06 23:25:12,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 23:25:12,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:12,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 23:25:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 23:25:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:12,630 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:12,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:12,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:12,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:12,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:12,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 23:25:12,667 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:12,668 INFO L82 PathProgramCache]: Analyzing trace with hash -458906501, now seen corresponding path program 1 times [2021-06-06 23:25:12,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:12,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088215949] [2021-06-06 23:25:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:12,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:12,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088215949] [2021-06-06 23:25:12,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088215949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:12,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821572011] [2021-06-06 23:25:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:12,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 23:25:12,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:12,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821572011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:12,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:12,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 23:25:12,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556934673] [2021-06-06 23:25:12,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 23:25:12,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:12,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 23:25:12,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 23:25:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:12,943 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:12,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:12,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:12,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:12,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:13,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:13,285 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:13,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:13,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1431714215, now seen corresponding path program 2 times [2021-06-06 23:25:13,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:13,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884709384] [2021-06-06 23:25:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:13,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:13,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884709384] [2021-06-06 23:25:13,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884709384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:13,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477289802] [2021-06-06 23:25:13,689 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:13,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 23:25:13,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 23:25:13,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:14,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:14,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2021-06-06 23:25:14,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 23:25:14,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:14,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:14,062 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:91 [2021-06-06 23:25:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:14,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477289802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:14,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:14,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 23:25:14,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824301602] [2021-06-06 23:25:14,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 23:25:14,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:14,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 23:25:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-06-06 23:25:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:14,243 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:14,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:14,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:14,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:14,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:14,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:14,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:14,968 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:14,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2943159, now seen corresponding path program 3 times [2021-06-06 23:25:14,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:14,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018669399] [2021-06-06 23:25:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:15,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:15,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018669399] [2021-06-06 23:25:15,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018669399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:15,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316933131] [2021-06-06 23:25:15,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:15,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 23:25:15,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:15,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 23:25:15,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:15,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316933131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:15,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:15,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 23:25:15,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288486892] [2021-06-06 23:25:15,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 23:25:15,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 23:25:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 23:25:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:15,291 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:15,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:15,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:15,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:15,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:15,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:15,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:15,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:15,925 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1443296635, now seen corresponding path program 4 times [2021-06-06 23:25:15,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:15,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866790810] [2021-06-06 23:25:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:16,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:16,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866790810] [2021-06-06 23:25:16,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866790810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:16,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405081343] [2021-06-06 23:25:16,003 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:16,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 23:25:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 23:25:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:16,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405081343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:16,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:16,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 23:25:16,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545950592] [2021-06-06 23:25:16,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 23:25:16,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:16,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 23:25:16,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-06 23:25:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:16,180 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:16,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:16,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:16,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:16,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:16,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:16,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:16,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:16,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-06 23:25:16,533 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:16,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1035098457, now seen corresponding path program 5 times [2021-06-06 23:25:16,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:16,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262061850] [2021-06-06 23:25:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:17,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:17,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262061850] [2021-06-06 23:25:17,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262061850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:17,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552271914] [2021-06-06 23:25:17,010 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:17,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 23:25:17,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-06 23:25:17,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:17,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:25:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:17,647 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 31 treesize of output 15 [2021-06-06 23:25:17,649 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:25:17,654 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:17,658 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:17,658 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:3 [2021-06-06 23:25:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:17,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552271914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:17,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:17,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-06-06 23:25:17,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381572529] [2021-06-06 23:25:17,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-06 23:25:17,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-06 23:25:17,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-06-06 23:25:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:17,694 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:17,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 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) [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:17,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:18,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:18,875 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:18,876 INFO L82 PathProgramCache]: Analyzing trace with hash -401326665, now seen corresponding path program 6 times [2021-06-06 23:25:18,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:18,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321386024] [2021-06-06 23:25:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:18,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:18,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321386024] [2021-06-06 23:25:18,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321386024] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:18,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883868202] [2021-06-06 23:25:18,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:19,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 23:25:19,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:19,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-06 23:25:19,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:19,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883868202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:19,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:19,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-06-06 23:25:19,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833196991] [2021-06-06 23:25:19,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-06 23:25:19,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:19,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-06 23:25:19,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-06-06 23:25:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:19,279 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:19,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:19,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:20,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:20,329 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1606694277, now seen corresponding path program 7 times [2021-06-06 23:25:20,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:20,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285645217] [2021-06-06 23:25:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:20,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:20,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285645217] [2021-06-06 23:25:20,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285645217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:20,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060234994] [2021-06-06 23:25:20,456 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:20,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-06 23:25:20,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:25:20,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060234994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:20,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:20,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2021-06-06 23:25:20,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926462672] [2021-06-06 23:25:20,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 23:25:20,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:20,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 23:25:20,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-06-06 23:25:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:20,657 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:20,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:20,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:21,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-06 23:25:21,025 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:21,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1221824423, now seen corresponding path program 8 times [2021-06-06 23:25:21,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:21,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723070878] [2021-06-06 23:25:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:21,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:21,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723070878] [2021-06-06 23:25:21,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723070878] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:21,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723219574] [2021-06-06 23:25:21,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:21,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 23:25:21,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:21,943 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 56 conjunts are in the unsatisfiable core [2021-06-06 23:25:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:22,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:22,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:22,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:22,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:22,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:22,606 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:22,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27 [2021-06-06 23:25:22,609 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-06 23:25:22,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:22,618 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:22,618 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:15 [2021-06-06 23:25:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:22,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723219574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:22,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:22,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 36 [2021-06-06 23:25:22,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873612161] [2021-06-06 23:25:22,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-06 23:25:22,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-06 23:25:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 23:25:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:22,707 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:22,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 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) [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:22,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:24,440 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-06-06 23:25:24,739 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2021-06-06 23:25:24,897 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2021-06-06 23:25:25,062 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-06 23:25:25,221 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 64 [2021-06-06 23:25:25,377 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2021-06-06 23:25:26,771 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2021-06-06 23:25:26,921 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:27,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-06 23:25:27,261 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1036660057, now seen corresponding path program 9 times [2021-06-06 23:25:27,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:27,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508758516] [2021-06-06 23:25:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:28,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:28,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508758516] [2021-06-06 23:25:28,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508758516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:28,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839558469] [2021-06-06 23:25:28,131 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:28,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-06 23:25:28,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:28,173 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 69 conjunts are in the unsatisfiable core [2021-06-06 23:25:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:29,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:29,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:29,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 39 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 79 [2021-06-06 23:25:29,287 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: and 3 xjuncts. [2021-06-06 23:25:29,325 INFO L628 ElimStorePlain]: treesize reduction 4, result has 89.2 percent of original size [2021-06-06 23:25:29,329 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:29,329 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:77, output treesize:27 [2021-06-06 23:25:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:29,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839558469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:29,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:29,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 42 [2021-06-06 23:25:29,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924339496] [2021-06-06 23:25:29,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-06-06 23:25:29,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:29,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-06-06 23:25:29,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 23:25:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:29,500 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:29,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:29,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:29,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:29,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:31,165 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2021-06-06 23:25:31,698 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-06-06 23:25:31,873 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 77 [2021-06-06 23:25:32,080 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2021-06-06 23:25:32,275 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 88 [2021-06-06 23:25:32,570 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2021-06-06 23:25:32,734 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 67 [2021-06-06 23:25:32,903 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 85 [2021-06-06 23:25:34,578 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2021-06-06 23:25:34,762 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2021-06-06 23:25:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:35,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-06 23:25:35,230 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash 695339865, now seen corresponding path program 10 times [2021-06-06 23:25:35,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:35,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420767223] [2021-06-06 23:25:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:36,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:36,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420767223] [2021-06-06 23:25:36,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420767223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:36,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870415932] [2021-06-06 23:25:36,212 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:36,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 23:25:36,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:36,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 72 conjunts are in the unsatisfiable core [2021-06-06 23:25:36,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:37,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:25:37,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:37,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 23 [2021-06-06 23:25:37,304 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:25:37,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:37,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:37,311 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:3 [2021-06-06 23:25:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:37,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870415932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:37,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:37,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 43 [2021-06-06 23:25:37,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077861277] [2021-06-06 23:25:37,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-06-06 23:25:37,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:37,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-06-06 23:25:37,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 23:25:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:37,351 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:37,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:37,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:37,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:37,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:37,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:37,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:38,632 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2021-06-06 23:25:38,871 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 108 [2021-06-06 23:25:39,314 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2021-06-06 23:25:39,509 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2021-06-06 23:25:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:25:41,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-06 23:25:41,637 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1820805721, now seen corresponding path program 11 times [2021-06-06 23:25:41,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:41,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624454751] [2021-06-06 23:25:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 20 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:42,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:42,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624454751] [2021-06-06 23:25:42,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624454751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:42,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768669107] [2021-06-06 23:25:42,910 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:42,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-06 23:25:42,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:42,952 WARN L261 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 80 conjunts are in the unsatisfiable core [2021-06-06 23:25:42,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:43,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:43,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 44 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 33 [2021-06-06 23:25:44,001 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-06 23:25:44,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:44,007 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:44,007 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:15 [2021-06-06 23:25:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:44,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768669107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:44,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:44,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 48 [2021-06-06 23:25:44,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799696258] [2021-06-06 23:25:44,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-06-06 23:25:44,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-06-06 23:25:44,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2081, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 23:25:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:44,103 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:44,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:44,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:44,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:44,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:25:44,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:47,079 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2021-06-06 23:25:47,259 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 83 [2021-06-06 23:25:47,479 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2021-06-06 23:25:47,647 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 69 [2021-06-06 23:25:47,818 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2021-06-06 23:25:48,013 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 76 [2021-06-06 23:25:48,221 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2021-06-06 23:25:50,206 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 107 [2021-06-06 23:25:50,411 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2021-06-06 23:25:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:25:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:25:50,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-06 23:25:50,921 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1843210841, now seen corresponding path program 12 times [2021-06-06 23:25:50,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:50,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329858135] [2021-06-06 23:25:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:25:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 24 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:52,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:25:52,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329858135] [2021-06-06 23:25:52,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329858135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:52,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658935701] [2021-06-06 23:25:52,092 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:25:52,137 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-06 23:25:52,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:25:52,141 WARN L261 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 93 conjunts are in the unsatisfiable core [2021-06-06 23:25:52,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:25:53,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:25:53,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:25:53,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 63 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 55 [2021-06-06 23:25:53,732 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-06-06 23:25:53,755 INFO L628 ElimStorePlain]: treesize reduction 4, result has 89.2 percent of original size [2021-06-06 23:25:53,758 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:25:53,759 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:93, output treesize:27 [2021-06-06 23:25:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:25:53,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658935701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:25:53,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:25:53,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 54 [2021-06-06 23:25:53,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416762616] [2021-06-06 23:25:53,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-06-06 23:25:53,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:25:53,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-06-06 23:25:53,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2575, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 23:25:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:53,915 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:25:53,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 54 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) [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:25:53,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:25:55,940 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2021-06-06 23:25:56,213 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 121 [2021-06-06 23:25:56,703 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2021-06-06 23:25:56,904 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:25:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:25:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:25:59,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-06 23:25:59,691 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:25:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:25:59,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1934169255, now seen corresponding path program 13 times [2021-06-06 23:25:59,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:25:59,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707295720] [2021-06-06 23:25:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:25:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:26:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:00,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:26:00,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707295720] [2021-06-06 23:26:00,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707295720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:00,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544513630] [2021-06-06 23:26:00,887 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:26:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:26:00,929 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 96 conjunts are in the unsatisfiable core [2021-06-06 23:26:00,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:26:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:26:02,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:02,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 29 [2021-06-06 23:26:02,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:26:02,582 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:26:02,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:26:02,583 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:82, output treesize:3 [2021-06-06 23:26:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:02,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544513630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:02,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:26:02,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 55 [2021-06-06 23:26:02,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16041241] [2021-06-06 23:26:02,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-06-06 23:26:02,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:26:02,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-06-06 23:26:02,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2681, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 23:26:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:02,628 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:26:02,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.109090909090909) internal successors, (116), 55 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:02,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:04,882 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2021-06-06 23:26:05,170 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 128 [2021-06-06 23:26:05,706 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2021-06-06 23:26:05,918 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 111 [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:26:08,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:26:08,901 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:26:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:26:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1530409639, now seen corresponding path program 14 times [2021-06-06 23:26:08,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:26:08,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393550209] [2021-06-06 23:26:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:26:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:26:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 32 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:10,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:26:10,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393550209] [2021-06-06 23:26:10,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393550209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:10,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884626956] [2021-06-06 23:26:10,537 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:26:10,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 23:26:10,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:26:10,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 104 conjunts are in the unsatisfiable core [2021-06-06 23:26:10,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:26:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:12,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:26:12,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 77 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 39 [2021-06-06 23:26:12,277 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-06 23:26:12,282 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:26:12,283 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:26:12,283 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:15 [2021-06-06 23:26:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:12,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884626956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:12,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:26:12,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30] total 60 [2021-06-06 23:26:12,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264290600] [2021-06-06 23:26:12,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-06-06 23:26:12,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:26:12,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-06-06 23:26:12,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3299, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 23:26:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:12,387 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:26:12,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:26:12,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:12,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:12,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:12,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:12,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:26:12,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:17,184 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 111 [2021-06-06 23:26:17,379 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 106 [2021-06-06 23:26:17,595 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 112 [2021-06-06 23:26:17,930 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2021-06-06 23:26:18,131 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2021-06-06 23:26:18,338 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2021-06-06 23:26:21,233 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 119 [2021-06-06 23:26:21,461 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 117 [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:26:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:26:21,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-06 23:26:21,877 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:26:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:26:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1842147239, now seen corresponding path program 15 times [2021-06-06 23:26:21,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:26:21,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515036999] [2021-06-06 23:26:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:26:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:26:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 44 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:23,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:26:23,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515036999] [2021-06-06 23:26:23,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515036999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:23,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247779244] [2021-06-06 23:26:23,721 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:26:23,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-06 23:26:23,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:26:23,773 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 117 conjunts are in the unsatisfiable core [2021-06-06 23:26:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:26:26,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:26,603 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-06 23:26:26,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:26:26,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 150 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 251 [2021-06-06 23:26:27,146 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 193 [2021-06-06 23:26:27,323 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 202 [2021-06-06 23:26:28,581 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2021-06-06 23:26:29,353 WARN L205 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2021-06-06 23:26:30,098 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2021-06-06 23:26:31,689 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-06 23:26:32,501 WARN L205 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-06 23:26:33,415 WARN L205 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 213 [2021-06-06 23:26:34,909 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2021-06-06 23:26:35,647 WARN L205 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 195 [2021-06-06 23:26:37,270 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 196 DAG size of output: 197 [2021-06-06 23:26:37,276 INFO L550 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-06 23:26:37,489 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 22 [2021-06-06 23:26:37,489 INFO L628 ElimStorePlain]: treesize reduction 2703, result has 1.3 percent of original size [2021-06-06 23:26:37,492 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:26:37,492 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:123, output treesize:33 [2021-06-06 23:26:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:37,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247779244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:37,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:26:37,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36] total 66 [2021-06-06 23:26:37,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379968070] [2021-06-06 23:26:37,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-06-06 23:26:37,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:26:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-06-06 23:26:37,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3941, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 23:26:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:37,698 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:26:37,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.0) internal successors, (132), 66 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:26:37,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:37,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:37,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:26:37,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:41,275 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2021-06-06 23:26:41,875 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 115 [2021-06-06 23:26:42,385 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 91 [2021-06-06 23:26:42,718 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 119 [2021-06-06 23:26:43,381 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 123 [2021-06-06 23:26:43,637 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 125 [2021-06-06 23:26:43,869 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 91 [2021-06-06 23:26:44,260 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 114 [2021-06-06 23:26:44,562 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 109 [2021-06-06 23:26:44,894 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 117 [2021-06-06 23:26:45,170 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 119 [2021-06-06 23:26:45,396 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2021-06-06 23:26:45,597 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 117 [2021-06-06 23:26:45,839 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 87 [2021-06-06 23:26:46,099 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 117 [2021-06-06 23:26:49,491 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 126 [2021-06-06 23:26:49,731 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 124 [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:26:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:26:50,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-06 23:26:50,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:26:50,365 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:26:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:26:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1249119143, now seen corresponding path program 16 times [2021-06-06 23:26:50,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:26:50,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331220637] [2021-06-06 23:26:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:26:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:26:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 50 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:52,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:26:52,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331220637] [2021-06-06 23:26:52,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331220637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:52,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198807748] [2021-06-06 23:26:52,526 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 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 [2021-06-06 23:26:52,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 23:26:52,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:26:52,572 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 120 conjunts are in the unsatisfiable core [2021-06-06 23:26:52,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:26:55,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:26:55,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:26:55,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 91 disjoint index pairs (out of 105 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 35 [2021-06-06 23:26:55,165 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:26:55,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:26:55,172 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:26:55,173 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:3 [2021-06-06 23:26:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:26:55,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198807748] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:26:55,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:26:55,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35] total 67 [2021-06-06 23:26:55,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399820103] [2021-06-06 23:26:55,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-06-06 23:26:55,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:26:55,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-06-06 23:26:55,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4038, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 23:26:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:26:55,227 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:26:55,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 67 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 88 states. [2021-06-06 23:26:55,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:27:00,201 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 99 [2021-06-06 23:27:00,469 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 95 [2021-06-06 23:27:00,808 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 116 [2021-06-06 23:27:01,103 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 111 [2021-06-06 23:27:01,377 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 115 [2021-06-06 23:27:01,642 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 123 [2021-06-06 23:27:01,853 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 81 [2021-06-06 23:27:02,062 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 120 [2021-06-06 23:27:02,314 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 88 [2021-06-06 23:27:02,584 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 120 [2021-06-06 23:27:05,975 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 130 [2021-06-06 23:27:06,235 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 127 [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:27:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:27:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-06 23:27:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-06 23:27:06,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2021-06-06 23:27:06,761 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:27:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:27:06,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2010495321, now seen corresponding path program 17 times [2021-06-06 23:27:06,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:27:06,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882598627] [2021-06-06 23:27:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:27:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:27:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 78 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:27:09,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:27:09,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882598627] [2021-06-06 23:27:09,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882598627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:27:09,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117107336] [2021-06-06 23:27:09,197 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:27:09,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-06 23:27:09,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:27:09,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 127 conjunts are in the unsatisfiable core [2021-06-06 23:27:09,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:27:12,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:27:12,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:12,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 105 disjoint index pairs (out of 120 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 37 [2021-06-06 23:27:12,554 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:27:12,559 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:27:12,560 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 23:27:12,560 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:108, output treesize:3 [2021-06-06 23:27:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:27:12,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117107336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:27:12,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:27:12,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 73 [2021-06-06 23:27:12,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663632194] [2021-06-06 23:27:12,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-06-06 23:27:12,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:27:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-06-06 23:27:12,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=4923, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 23:27:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:27:12,616 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:27:12,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 73 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:27:12,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 88 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 91 states. [2021-06-06 23:27:12,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:27:18,825 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 62 [2021-06-06 23:27:21,037 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 118 [2021-06-06 23:27:21,319 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 114 [2021-06-06 23:27:21,701 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 135 [2021-06-06 23:27:22,063 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 130 [2021-06-06 23:27:22,443 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 136 [2021-06-06 23:27:22,709 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 127 [2021-06-06 23:27:22,939 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 84 [2021-06-06 23:27:23,149 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 125 [2021-06-06 23:27:23,412 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 91 [2021-06-06 23:27:23,695 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 125 [2021-06-06 23:27:28,175 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 134 [2021-06-06 23:27:28,445 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 132 [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:27:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-06 23:27:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-06-06 23:27:28,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable336 [2021-06-06 23:27:28,952 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:27:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:27:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash -830234791, now seen corresponding path program 18 times [2021-06-06 23:27:28,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:27:28,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227419709] [2021-06-06 23:27:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:27:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:27:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 72 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:27:31,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:27:31,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227419709] [2021-06-06 23:27:31,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227419709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:27:31,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066166050] [2021-06-06 23:27:31,488 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:27:31,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-06 23:27:31,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:27:31,549 WARN L261 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 141 conjunts are in the unsatisfiable core [2021-06-06 23:27:31,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:27:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:27:35,079 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2021-06-06 23:27:35,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:27:35,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 140 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 70 case distinctions, treesize of input 111 treesize of output 707 [2021-06-06 23:27:35,396 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 539 DAG size of output: 415 [2021-06-06 23:27:35,528 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 438 [2021-06-06 23:27:36,555 WARN L205 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 1683 DAG size of output: 1169 [2021-06-06 23:27:37,557 WARN L205 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 1700 DAG size of output: 1187 [2021-06-06 23:27:44,586 WARN L205 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 5095 DAG size of output: 3744 [2021-06-06 23:27:51,575 WARN L205 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 5109 DAG size of output: 3759 [2021-06-06 23:28:27,935 WARN L205 SmtUtils]: Spent 34.41 s on a formula simplification. DAG size of input: 17268 DAG size of output: 12662 [2021-06-06 23:29:04,931 WARN L205 SmtUtils]: Spent 36.52 s on a formula simplification. DAG size of input: 17282 DAG size of output: 12677 [2021-06-06 23:31:59,256 WARN L205 SmtUtils]: Spent 2.83 m on a formula simplification. DAG size of input: 57188 DAG size of output: 38512 [2021-06-06 23:35:00,442 WARN L205 SmtUtils]: Spent 3.00 m on a formula simplification. DAG size of input: 57202 DAG size of output: 38527 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown