/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:00,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:00,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:00,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:44:00,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:44:00,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:44:00,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:44:00,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:44:00,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:44:00,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:44:00,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:44:00,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:44:00,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:00,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:00,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:00,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:44:00,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:00,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:00,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:00,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:00,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:00,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:00,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:00,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:00,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:00,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:00,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:00,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:00,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:00,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:00,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:00,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:00,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:00,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:00,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:00,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:00,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:00,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:00,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:00,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:00,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:00,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:00,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:00,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:00,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:00,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:01,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:01,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:01,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:01,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:01,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:01,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-10-23 18:44:01,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098ea53b5/0147796e167b402680b224d0ab0c37ba/FLAG8b9d65543 [2020-10-23 18:44:02,108 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:02,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-10-23 18:44:02,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098ea53b5/0147796e167b402680b224d0ab0c37ba/FLAG8b9d65543 [2020-10-23 18:44:02,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098ea53b5/0147796e167b402680b224d0ab0c37ba [2020-10-23 18:44:02,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:02,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:02,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:02,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:02,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:02,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f56a40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02, skipping insertion in model container [2020-10-23 18:44:02,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:02,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:02,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:02,836 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:02,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:02,888 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:02,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02 WrapperNode [2020-10-23 18:44:02,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:02,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:02,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:02,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:02,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:02,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:02,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:02,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:02,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (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 [2020-10-23 18:44:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:03,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:03,604 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:44:03,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:03 BoogieIcfgContainer [2020-10-23 18:44:03,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:03,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:03,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:03,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:03,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:02" (1/3) ... [2020-10-23 18:44:03,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f8dd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:03, skipping insertion in model container [2020-10-23 18:44:03,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (2/3) ... [2020-10-23 18:44:03,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f8dd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:03, skipping insertion in model container [2020-10-23 18:44:03,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:03" (3/3) ... [2020-10-23 18:44:03,615 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-10-23 18:44:03,626 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:03,632 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:03,663 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:03,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:03,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:03,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:03,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:03,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:03,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:03,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:03,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-23 18:44:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:44:03,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:03,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:03,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:03,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2051804430, now seen corresponding path program 1 times [2020-10-23 18:44:03,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:03,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428074845] [2020-10-23 18:44:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:03,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:03,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428074845] [2020-10-23 18:44:03,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:03,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:44:03,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676656535] [2020-10-23 18:44:03,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:44:03,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:03,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:44:04,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:04,003 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-23 18:44:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:04,064 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2020-10-23 18:44:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:44:04,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-23 18:44:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:04,073 INFO L225 Difference]: With dead ends: 55 [2020-10-23 18:44:04,073 INFO L226 Difference]: Without dead ends: 25 [2020-10-23 18:44:04,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-23 18:44:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-23 18:44:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-23 18:44:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-23 18:44:04,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2020-10-23 18:44:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:04,118 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-23 18:44:04,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:44:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-23 18:44:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 18:44:04,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:04,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:04,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:04,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:04,122 INFO L82 PathProgramCache]: Analyzing trace with hash -796751348, now seen corresponding path program 1 times [2020-10-23 18:44:04,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:04,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13393390] [2020-10-23 18:44:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:04,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13393390] [2020-10-23 18:44:04,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:04,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:04,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55379697] [2020-10-23 18:44:04,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:04,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:04,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:04,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:04,297 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-10-23 18:44:04,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:04,529 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-23 18:44:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:04,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-23 18:44:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:04,532 INFO L225 Difference]: With dead ends: 36 [2020-10-23 18:44:04,532 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:44:04,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:44:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-23 18:44:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 18:44:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-23 18:44:04,545 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2020-10-23 18:44:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:04,546 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-23 18:44:04,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-23 18:44:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:44:04,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:04,548 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:04,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:44:04,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:04,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1608720032, now seen corresponding path program 1 times [2020-10-23 18:44:04,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:04,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249061644] [2020-10-23 18:44:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 18:44:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:04,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249061644] [2020-10-23 18:44:04,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:04,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:04,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142160346] [2020-10-23 18:44:04,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:04,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:04,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:04,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:04,725 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-10-23 18:44:04,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:04,995 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-23 18:44:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:44:04,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-23 18:44:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:05,000 INFO L225 Difference]: With dead ends: 54 [2020-10-23 18:44:05,000 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 18:44:05,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:44:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 18:44:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-23 18:44:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:44:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-23 18:44:05,014 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-10-23 18:44:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:05,014 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-23 18:44:05,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-23 18:44:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 18:44:05,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:05,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:05,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:44:05,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:05,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:05,017 INFO L82 PathProgramCache]: Analyzing trace with hash -165440091, now seen corresponding path program 1 times [2020-10-23 18:44:05,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:05,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529605706] [2020-10-23 18:44:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 18:44:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:05,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529605706] [2020-10-23 18:44:05,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231323808] [2020-10-23 18:44:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 18:44:05,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:05,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:05,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2020-10-23 18:44:05,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331769540] [2020-10-23 18:44:05,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 18:44:05,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:05,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 18:44:05,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:44:05,314 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 12 states. [2020-10-23 18:44:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:05,850 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-23 18:44:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 18:44:05,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-23 18:44:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:05,852 INFO L225 Difference]: With dead ends: 69 [2020-10-23 18:44:05,852 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 18:44:05,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-10-23 18:44:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 18:44:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-10-23 18:44:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-23 18:44:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-23 18:44:05,864 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 30 [2020-10-23 18:44:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:05,864 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-23 18:44:05,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 18:44:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-23 18:44:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 18:44:05,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:05,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:06,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:06,083 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash -536955394, now seen corresponding path program 2 times [2020-10-23 18:44:06,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:06,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988429455] [2020-10-23 18:44:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 18:44:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 18:44:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:44:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988429455] [2020-10-23 18:44:06,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347521237] [2020-10-23 18:44:06,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:06,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:44:06,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:06,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 18:44:06,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:44:06,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:06,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-23 18:44:06,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637195744] [2020-10-23 18:44:06,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 18:44:06,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:06,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 18:44:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:44:06,497 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 15 states. [2020-10-23 18:44:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:07,333 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2020-10-23 18:44:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 18:44:07,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-23 18:44:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:07,336 INFO L225 Difference]: With dead ends: 87 [2020-10-23 18:44:07,337 INFO L226 Difference]: Without dead ends: 66 [2020-10-23 18:44:07,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2020-10-23 18:44:07,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-23 18:44:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-10-23 18:44:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-23 18:44:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-10-23 18:44:07,360 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 40 [2020-10-23 18:44:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:07,361 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-10-23 18:44:07,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 18:44:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-10-23 18:44:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-23 18:44:07,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:07,368 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:07,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:07,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash 705755927, now seen corresponding path program 3 times [2020-10-23 18:44:07,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:07,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350172021] [2020-10-23 18:44:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:07,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 18:44:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:07,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:44:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:07,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-23 18:44:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:44:07,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350172021] [2020-10-23 18:44:07,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721348538] [2020-10-23 18:44:07,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:07,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-23 18:44:07,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:07,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 18:44:07,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:44:07,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:07,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2020-10-23 18:44:08,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007830075] [2020-10-23 18:44:08,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 18:44:08,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:08,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 18:44:08,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-23 18:44:08,002 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 16 states. [2020-10-23 18:44:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:08,544 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2020-10-23 18:44:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 18:44:08,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-23 18:44:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:08,547 INFO L225 Difference]: With dead ends: 96 [2020-10-23 18:44:08,547 INFO L226 Difference]: Without dead ends: 71 [2020-10-23 18:44:08,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-23 18:44:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-23 18:44:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-10-23 18:44:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-23 18:44:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-23 18:44:08,560 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 50 [2020-10-23 18:44:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:08,560 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-23 18:44:08,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 18:44:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-23 18:44:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-23 18:44:08,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:08,562 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:08,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:08,776 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash 294006876, now seen corresponding path program 4 times [2020-10-23 18:44:08,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:08,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222591728] [2020-10-23 18:44:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 18:44:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 18:44:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:44:08,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222591728] [2020-10-23 18:44:08,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392298287] [2020-10-23 18:44:08,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:09,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:44:09,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-23 18:44:09,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:09,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:44:09,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:09,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2020-10-23 18:44:09,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584889436] [2020-10-23 18:44:09,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 18:44:09,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:09,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 18:44:09,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:44:09,113 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 13 states. [2020-10-23 18:44:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:09,545 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2020-10-23 18:44:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 18:44:09,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-23 18:44:09,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:09,547 INFO L225 Difference]: With dead ends: 72 [2020-10-23 18:44:09,547 INFO L226 Difference]: Without dead ends: 68 [2020-10-23 18:44:09,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-10-23 18:44:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-23 18:44:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-23 18:44:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-23 18:44:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-23 18:44:09,563 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 52 [2020-10-23 18:44:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:09,563 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-23 18:44:09,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 18:44:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-23 18:44:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-23 18:44:09,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:09,566 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:09,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:09,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash 218948996, now seen corresponding path program 5 times [2020-10-23 18:44:09,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:09,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182958250] [2020-10-23 18:44:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 18:44:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 18:44:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:10,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:10,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182958250] [2020-10-23 18:44:10,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047493725] [2020-10-23 18:44:10,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:10,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-23 18:44:10,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:10,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-23 18:44:10,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:10,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:10,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2020-10-23 18:44:10,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732741952] [2020-10-23 18:44:10,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 18:44:10,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 18:44:10,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-23 18:44:10,333 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 21 states. [2020-10-23 18:44:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:11,036 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2020-10-23 18:44:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 18:44:11,037 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-10-23 18:44:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:11,038 INFO L225 Difference]: With dead ends: 124 [2020-10-23 18:44:11,038 INFO L226 Difference]: Without dead ends: 89 [2020-10-23 18:44:11,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2020-10-23 18:44:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-23 18:44:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2020-10-23 18:44:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-23 18:44:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-23 18:44:11,068 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 68 [2020-10-23 18:44:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:11,068 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-23 18:44:11,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 18:44:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-23 18:44:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-23 18:44:11,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:11,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:11,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:11,275 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:11,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1771359351, now seen corresponding path program 6 times [2020-10-23 18:44:11,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:11,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691142362] [2020-10-23 18:44:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 18:44:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 18:44:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 18:44:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 18:44:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 18:44:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:11,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691142362] [2020-10-23 18:44:11,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162390927] [2020-10-23 18:44:11,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:11,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-23 18:44:11,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:44:11,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:11,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:11,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 22 [2020-10-23 18:44:11,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119166819] [2020-10-23 18:44:11,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-23 18:44:11,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:11,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-23 18:44:11,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-10-23 18:44:11,881 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 22 states. [2020-10-23 18:44:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:12,692 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2020-10-23 18:44:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 18:44:12,693 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70 [2020-10-23 18:44:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:12,695 INFO L225 Difference]: With dead ends: 128 [2020-10-23 18:44:12,695 INFO L226 Difference]: Without dead ends: 95 [2020-10-23 18:44:12,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 18:44:12,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-23 18:44:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 71. [2020-10-23 18:44:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-23 18:44:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-23 18:44:12,718 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 70 [2020-10-23 18:44:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:12,719 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-23 18:44:12,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-23 18:44:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-23 18:44:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-23 18:44:12,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:12,723 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:12,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:12,925 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1097733198, now seen corresponding path program 7 times [2020-10-23 18:44:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:12,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623030065] [2020-10-23 18:44:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 18:44:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 18:44:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 18:44:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:44:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:44:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 40 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:13,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623030065] [2020-10-23 18:44:13,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357141471] [2020-10-23 18:44:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:13,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-23 18:44:13,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:13,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:13,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:13,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-10-23 18:44:13,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560214930] [2020-10-23 18:44:13,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 18:44:13,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:13,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 18:44:13,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:44:13,351 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 15 states. [2020-10-23 18:44:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:13,996 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2020-10-23 18:44:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 18:44:13,996 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-23 18:44:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:13,998 INFO L225 Difference]: With dead ends: 88 [2020-10-23 18:44:13,998 INFO L226 Difference]: Without dead ends: 84 [2020-10-23 18:44:13,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2020-10-23 18:44:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-23 18:44:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-23 18:44:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-23 18:44:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-10-23 18:44:14,019 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 72 [2020-10-23 18:44:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:14,019 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-10-23 18:44:14,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 18:44:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-10-23 18:44:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-23 18:44:14,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:14,021 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:14,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-23 18:44:14,237 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1868735862, now seen corresponding path program 8 times [2020-10-23 18:44:14,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:14,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200904781] [2020-10-23 18:44:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 18:44:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 18:44:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 18:44:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:44:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:44:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:44:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:44:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 94 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 18:44:14,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200904781] [2020-10-23 18:44:14,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7529433] [2020-10-23 18:44:14,540 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 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 [2020-10-23 18:44:14,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:44:14,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:14,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-23 18:44:14,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-23 18:44:14,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:14,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 26 [2020-10-23 18:44:14,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098609047] [2020-10-23 18:44:14,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-23 18:44:14,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:14,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-23 18:44:14,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-10-23 18:44:14,882 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 26 states. [2020-10-23 18:44:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:15,799 INFO L93 Difference]: Finished difference Result 156 states and 182 transitions. [2020-10-23 18:44:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 18:44:15,799 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2020-10-23 18:44:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:15,801 INFO L225 Difference]: With dead ends: 156 [2020-10-23 18:44:15,802 INFO L226 Difference]: Without dead ends: 113 [2020-10-23 18:44:15,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=353, Invalid=1207, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 18:44:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-23 18:44:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2020-10-23 18:44:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-23 18:44:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-23 18:44:15,815 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 88 [2020-10-23 18:44:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:15,816 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-23 18:44:15,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-23 18:44:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-23 18:44:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-23 18:44:15,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:15,818 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:16,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-23 18:44:16,032 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:16,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2005581563, now seen corresponding path program 9 times [2020-10-23 18:44:16,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:16,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290748069] [2020-10-23 18:44:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 18:44:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-23 18:44:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 18:44:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 18:44:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-23 18:44:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 18:44:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:44:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 18:44:16,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290748069] [2020-10-23 18:44:16,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033875566] [2020-10-23 18:44:16,348 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 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 [2020-10-23 18:44:16,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-23 18:44:16,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:16,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-23 18:44:16,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 18:44:16,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:16,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 28 [2020-10-23 18:44:16,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661930973] [2020-10-23 18:44:16,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-23 18:44:16,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:16,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-23 18:44:16,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2020-10-23 18:44:16,767 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 28 states. [2020-10-23 18:44:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:17,801 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2020-10-23 18:44:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 18:44:17,802 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 90 [2020-10-23 18:44:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:17,804 INFO L225 Difference]: With dead ends: 160 [2020-10-23 18:44:17,804 INFO L226 Difference]: Without dead ends: 119 [2020-10-23 18:44:17,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=1455, Unknown=0, NotChecked=0, Total=1892 [2020-10-23 18:44:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-23 18:44:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2020-10-23 18:44:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-23 18:44:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-10-23 18:44:17,819 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 90 [2020-10-23 18:44:17,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:17,820 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-10-23 18:44:17,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-23 18:44:17,820 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-10-23 18:44:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-23 18:44:17,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:17,823 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:18,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:18,039 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash 370314048, now seen corresponding path program 10 times [2020-10-23 18:44:18,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:18,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679208645] [2020-10-23 18:44:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 18:44:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:44:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:44:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:44:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 70 proven. 114 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 18:44:18,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679208645] [2020-10-23 18:44:18,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893439915] [2020-10-23 18:44:18,250 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 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 [2020-10-23 18:44:18,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:44:18,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:18,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-23 18:44:18,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:18,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 18:44:18,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:18,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 17 [2020-10-23 18:44:18,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393301467] [2020-10-23 18:44:18,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 18:44:18,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:18,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 18:44:18,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-23 18:44:18,420 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 17 states. [2020-10-23 18:44:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:19,104 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-10-23 18:44:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 18:44:19,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-23 18:44:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:19,106 INFO L225 Difference]: With dead ends: 104 [2020-10-23 18:44:19,106 INFO L226 Difference]: Without dead ends: 100 [2020-10-23 18:44:19,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-10-23 18:44:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-23 18:44:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-23 18:44:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-23 18:44:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2020-10-23 18:44:19,117 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 92 [2020-10-23 18:44:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:19,118 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2020-10-23 18:44:19,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 18:44:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2020-10-23 18:44:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-23 18:44:19,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:19,120 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:19,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:19,326 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash 149878888, now seen corresponding path program 11 times [2020-10-23 18:44:19,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:19,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516377346] [2020-10-23 18:44:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 18:44:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:44:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:44:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:44:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:44:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:44:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 156 proven. 96 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-23 18:44:19,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516377346] [2020-10-23 18:44:19,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575521191] [2020-10-23 18:44:19,686 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 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 [2020-10-23 18:44:19,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-23 18:44:19,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:19,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-23 18:44:19,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-23 18:44:20,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:20,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 33 [2020-10-23 18:44:20,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297710876] [2020-10-23 18:44:20,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-23 18:44:20,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:20,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-23 18:44:20,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 18:44:20,190 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 33 states. [2020-10-23 18:44:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:21,319 INFO L93 Difference]: Finished difference Result 188 states and 221 transitions. [2020-10-23 18:44:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 18:44:21,320 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 108 [2020-10-23 18:44:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:21,322 INFO L225 Difference]: With dead ends: 188 [2020-10-23 18:44:21,322 INFO L226 Difference]: Without dead ends: 137 [2020-10-23 18:44:21,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=570, Invalid=1980, Unknown=0, NotChecked=0, Total=2550 [2020-10-23 18:44:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-23 18:44:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 101. [2020-10-23 18:44:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-23 18:44:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-10-23 18:44:21,336 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 108 [2020-10-23 18:44:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:21,337 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-10-23 18:44:21,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-23 18:44:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-10-23 18:44:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-23 18:44:21,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:21,340 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:21,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-23 18:44:21,550 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:21,551 INFO L82 PathProgramCache]: Analyzing trace with hash -393732755, now seen corresponding path program 12 times [2020-10-23 18:44:21,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:21,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345763445] [2020-10-23 18:44:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 18:44:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 18:44:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 18:44:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 18:44:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:44:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 18:44:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:44:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:44:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:44:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 156 proven. 114 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-23 18:44:22,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345763445] [2020-10-23 18:44:22,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750330072] [2020-10-23 18:44:22,023 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 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 [2020-10-23 18:44:22,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-23 18:44:22,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:22,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-23 18:44:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-23 18:44:22,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:22,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 34 [2020-10-23 18:44:22,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049876520] [2020-10-23 18:44:22,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-23 18:44:22,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-23 18:44:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 18:44:22,575 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 34 states. [2020-10-23 18:44:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:24,010 INFO L93 Difference]: Finished difference Result 192 states and 228 transitions. [2020-10-23 18:44:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 18:44:24,011 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 110 [2020-10-23 18:44:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:24,013 INFO L225 Difference]: With dead ends: 192 [2020-10-23 18:44:24,013 INFO L226 Difference]: Without dead ends: 143 [2020-10-23 18:44:24,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=654, Invalid=2208, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 18:44:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-23 18:44:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 103. [2020-10-23 18:44:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-23 18:44:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2020-10-23 18:44:24,026 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 110 [2020-10-23 18:44:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:24,026 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2020-10-23 18:44:24,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-23 18:44:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2020-10-23 18:44:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 18:44:24,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:24,028 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:24,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-23 18:44:24,238 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1181488434, now seen corresponding path program 13 times [2020-10-23 18:44:24,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:24,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324639162] [2020-10-23 18:44:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 18:44:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 18:44:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:44:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:44:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:44:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:44:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:44:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:44:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:44:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 108 proven. 182 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-23 18:44:24,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324639162] [2020-10-23 18:44:24,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791237548] [2020-10-23 18:44:24,504 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 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 [2020-10-23 18:44:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-23 18:44:24,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:24,647 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-23 18:44:24,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:24,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 19 [2020-10-23 18:44:24,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137724462] [2020-10-23 18:44:24,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 18:44:24,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:24,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 18:44:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 18:44:24,701 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 19 states. [2020-10-23 18:44:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:25,487 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2020-10-23 18:44:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 18:44:25,487 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-23 18:44:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:25,489 INFO L225 Difference]: With dead ends: 120 [2020-10-23 18:44:25,489 INFO L226 Difference]: Without dead ends: 116 [2020-10-23 18:44:25,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 18:44:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-23 18:44:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-23 18:44:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-23 18:44:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2020-10-23 18:44:25,501 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 112 [2020-10-23 18:44:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:25,501 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2020-10-23 18:44:25,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 18:44:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2020-10-23 18:44:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-23 18:44:25,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:25,503 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:25,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-23 18:44:25,717 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1884660134, now seen corresponding path program 14 times [2020-10-23 18:44:25,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:25,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207076453] [2020-10-23 18:44:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 18:44:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 18:44:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:44:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:44:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:44:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:44:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:44:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:44:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:44:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:44:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:44:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 234 proven. 140 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-23 18:44:26,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207076453] [2020-10-23 18:44:26,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840295189] [2020-10-23 18:44:26,247 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 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 [2020-10-23 18:44:26,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:44:26,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:26,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-23 18:44:26,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 300 proven. 110 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-23 18:44:26,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:26,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 38 [2020-10-23 18:44:26,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085302088] [2020-10-23 18:44:26,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-23 18:44:26,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:26,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-23 18:44:26,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2020-10-23 18:44:26,818 INFO L87 Difference]: Start difference. First operand 115 states and 122 transitions. Second operand 38 states. [2020-10-23 18:44:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:28,323 INFO L93 Difference]: Finished difference Result 220 states and 260 transitions. [2020-10-23 18:44:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 18:44:28,324 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 128 [2020-10-23 18:44:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:28,327 INFO L225 Difference]: With dead ends: 220 [2020-10-23 18:44:28,327 INFO L226 Difference]: Without dead ends: 161 [2020-10-23 18:44:28,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=791, Invalid=2749, Unknown=0, NotChecked=0, Total=3540 [2020-10-23 18:44:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-23 18:44:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 117. [2020-10-23 18:44:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-23 18:44:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2020-10-23 18:44:28,340 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 128 [2020-10-23 18:44:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:28,341 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2020-10-23 18:44:28,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-23 18:44:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2020-10-23 18:44:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-23 18:44:28,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:28,342 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:28,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:28,558 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash 54251231, now seen corresponding path program 15 times [2020-10-23 18:44:28,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:28,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635758527] [2020-10-23 18:44:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-23 18:44:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 18:44:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 18:44:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-23 18:44:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 18:44:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:44:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:44:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:44:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:44:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:44:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:44:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 234 proven. 162 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-23 18:44:29,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635758527] [2020-10-23 18:44:29,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107027064] [2020-10-23 18:44:29,065 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 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 [2020-10-23 18:44:29,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-10-23 18:44:29,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:29,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-23 18:44:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-23 18:44:29,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:29,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 40 [2020-10-23 18:44:29,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131436163] [2020-10-23 18:44:29,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-23 18:44:29,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-23 18:44:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 18:44:29,725 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand 40 states. [2020-10-23 18:44:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:31,393 INFO L93 Difference]: Finished difference Result 224 states and 267 transitions. [2020-10-23 18:44:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 18:44:31,393 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 130 [2020-10-23 18:44:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:31,395 INFO L225 Difference]: With dead ends: 224 [2020-10-23 18:44:31,395 INFO L226 Difference]: Without dead ends: 167 [2020-10-23 18:44:31,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=915, Invalid=3117, Unknown=0, NotChecked=0, Total=4032 [2020-10-23 18:44:31,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-23 18:44:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 119. [2020-10-23 18:44:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-23 18:44:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-10-23 18:44:31,409 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 130 [2020-10-23 18:44:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:31,409 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-10-23 18:44:31,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-23 18:44:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-10-23 18:44:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-23 18:44:31,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:31,410 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:31,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-23 18:44:31,625 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:31,626 INFO L82 PathProgramCache]: Analyzing trace with hash -667733468, now seen corresponding path program 16 times [2020-10-23 18:44:31,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:31,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884965946] [2020-10-23 18:44:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:44:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:44:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:44:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:44:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:44:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:44:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:44:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:44:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 154 proven. 266 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-23 18:44:31,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884965946] [2020-10-23 18:44:31,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461928179] [2020-10-23 18:44:31,901 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 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 [2020-10-23 18:44:31,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:44:31,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:31,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-23 18:44:31,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:32,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-23 18:44:32,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:32,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 21 [2020-10-23 18:44:32,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826013498] [2020-10-23 18:44:32,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 18:44:32,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:32,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 18:44:32,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-23 18:44:32,101 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 21 states. [2020-10-23 18:44:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:33,037 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2020-10-23 18:44:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 18:44:33,038 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 132 [2020-10-23 18:44:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:33,040 INFO L225 Difference]: With dead ends: 136 [2020-10-23 18:44:33,040 INFO L226 Difference]: Without dead ends: 132 [2020-10-23 18:44:33,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2020-10-23 18:44:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-23 18:44:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-23 18:44:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-23 18:44:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2020-10-23 18:44:33,052 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 132 [2020-10-23 18:44:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:33,052 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2020-10-23 18:44:33,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 18:44:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2020-10-23 18:44:33,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 18:44:33,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:33,054 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:33,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:33,267 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:33,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2008197300, now seen corresponding path program 17 times [2020-10-23 18:44:33,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:33,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635649052] [2020-10-23 18:44:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:44:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:44:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:44:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:44:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:44:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:44:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:44:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:44:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:44:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:44:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 328 proven. 192 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-23 18:44:33,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635649052] [2020-10-23 18:44:33,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755385254] [2020-10-23 18:44:33,870 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 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 [2020-10-23 18:44:33,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-10-23 18:44:33,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:33,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-23 18:44:33,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 364 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-23 18:44:34,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:34,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 45 [2020-10-23 18:44:34,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856960718] [2020-10-23 18:44:34,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-23 18:44:34,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:34,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-23 18:44:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2020-10-23 18:44:34,669 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 45 states. [2020-10-23 18:44:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:36,535 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2020-10-23 18:44:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-23 18:44:36,536 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 148 [2020-10-23 18:44:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:36,539 INFO L225 Difference]: With dead ends: 252 [2020-10-23 18:44:36,539 INFO L226 Difference]: Without dead ends: 185 [2020-10-23 18:44:36,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1104, Invalid=3866, Unknown=0, NotChecked=0, Total=4970 [2020-10-23 18:44:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-23 18:44:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 133. [2020-10-23 18:44:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-23 18:44:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2020-10-23 18:44:36,554 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 148 [2020-10-23 18:44:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:36,554 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2020-10-23 18:44:36,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-23 18:44:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2020-10-23 18:44:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-23 18:44:36,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:36,556 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:36,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:36,765 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash 4084561, now seen corresponding path program 18 times [2020-10-23 18:44:36,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:36,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105183812] [2020-10-23 18:44:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 18:44:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 18:44:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 18:44:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:44:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 18:44:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:44:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:44:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:44:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:44:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:44:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:44:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:44:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:44:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-23 18:44:37,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105183812] [2020-10-23 18:44:37,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164868681] [2020-10-23 18:44:37,361 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 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 [2020-10-23 18:44:37,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-10-23 18:44:37,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:37,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-23 18:44:37,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-23 18:44:38,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:38,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 46 [2020-10-23 18:44:38,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373412881] [2020-10-23 18:44:38,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-23 18:44:38,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:38,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-23 18:44:38,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2020-10-23 18:44:38,203 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand 46 states. [2020-10-23 18:44:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:40,200 INFO L93 Difference]: Finished difference Result 256 states and 306 transitions. [2020-10-23 18:44:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-23 18:44:40,202 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 150 [2020-10-23 18:44:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:40,204 INFO L225 Difference]: With dead ends: 256 [2020-10-23 18:44:40,204 INFO L226 Difference]: Without dead ends: 191 [2020-10-23 18:44:40,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1220, Invalid=4182, Unknown=0, NotChecked=0, Total=5402 [2020-10-23 18:44:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-23 18:44:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 135. [2020-10-23 18:44:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-23 18:44:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 143 transitions. [2020-10-23 18:44:40,220 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 143 transitions. Word has length 150 [2020-10-23 18:44:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:40,220 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 143 transitions. [2020-10-23 18:44:40,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-23 18:44:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 143 transitions. [2020-10-23 18:44:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-23 18:44:40,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:40,222 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:40,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-23 18:44:40,434 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:40,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1071669782, now seen corresponding path program 19 times [2020-10-23 18:44:40,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:40,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548971805] [2020-10-23 18:44:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 18:44:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:44:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:44:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:44:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:44:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:44:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:44:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:44:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:44:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:44:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:44:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:44:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:44:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 208 proven. 366 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-23 18:44:40,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548971805] [2020-10-23 18:44:40,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195474346] [2020-10-23 18:44:40,783 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 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 [2020-10-23 18:44:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:40,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-23 18:44:40,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:40,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-23 18:44:40,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:41,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 23 [2020-10-23 18:44:41,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187480975] [2020-10-23 18:44:41,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-23 18:44:41,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:41,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-23 18:44:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-23 18:44:41,002 INFO L87 Difference]: Start difference. First operand 135 states and 143 transitions. Second operand 23 states. [2020-10-23 18:44:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:42,112 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2020-10-23 18:44:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 18:44:42,116 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 152 [2020-10-23 18:44:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:42,117 INFO L225 Difference]: With dead ends: 152 [2020-10-23 18:44:42,117 INFO L226 Difference]: Without dead ends: 148 [2020-10-23 18:44:42,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 18:44:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-23 18:44:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-23 18:44:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-23 18:44:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2020-10-23 18:44:42,130 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 152 [2020-10-23 18:44:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:42,130 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2020-10-23 18:44:42,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-23 18:44:42,131 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2020-10-23 18:44:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-23 18:44:42,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:42,132 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:42,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:42,345 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1716544318, now seen corresponding path program 20 times [2020-10-23 18:44:42,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:42,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291041074] [2020-10-23 18:44:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 18:44:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:44:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:44:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:44:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:44:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:44:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:44:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:44:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:44:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:44:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:44:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:44:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:44:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:44:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:44:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 438 proven. 252 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-23 18:44:43,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291041074] [2020-10-23 18:44:43,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310638126] [2020-10-23 18:44:43,055 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:43,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:44:43,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:43,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-23 18:44:43,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 532 proven. 210 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-23 18:44:43,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:43,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32] total 50 [2020-10-23 18:44:43,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109918652] [2020-10-23 18:44:43,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-23 18:44:43,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-23 18:44:43,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=1917, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 18:44:43,992 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 50 states. [2020-10-23 18:44:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:46,125 INFO L93 Difference]: Finished difference Result 284 states and 338 transitions. [2020-10-23 18:44:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-23 18:44:46,125 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 168 [2020-10-23 18:44:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:46,128 INFO L225 Difference]: With dead ends: 284 [2020-10-23 18:44:46,128 INFO L226 Difference]: Without dead ends: 209 [2020-10-23 18:44:46,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1405, Invalid=4915, Unknown=0, NotChecked=0, Total=6320 [2020-10-23 18:44:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-23 18:44:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 149. [2020-10-23 18:44:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-23 18:44:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 158 transitions. [2020-10-23 18:44:46,145 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 158 transitions. Word has length 168 [2020-10-23 18:44:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:46,146 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 158 transitions. [2020-10-23 18:44:46,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-23 18:44:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 158 transitions. [2020-10-23 18:44:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-23 18:44:46,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:46,147 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:46,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-23 18:44:46,363 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1458055875, now seen corresponding path program 21 times [2020-10-23 18:44:46,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:46,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166894913] [2020-10-23 18:44:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 18:44:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 18:44:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-23 18:44:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 18:44:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:44:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:44:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:44:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:44:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:44:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:44:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:44:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:44:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:44:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:44:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:44:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 438 proven. 282 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-23 18:44:47,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166894913] [2020-10-23 18:44:47,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657414596] [2020-10-23 18:44:47,151 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:47,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-23 18:44:47,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:47,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-23 18:44:47,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-23 18:44:48,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:48,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 52 [2020-10-23 18:44:48,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118253833] [2020-10-23 18:44:48,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-23 18:44:48,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:48,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-23 18:44:48,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2020-10-23 18:44:48,154 INFO L87 Difference]: Start difference. First operand 149 states and 158 transitions. Second operand 52 states. [2020-10-23 18:44:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:50,597 INFO L93 Difference]: Finished difference Result 288 states and 345 transitions. [2020-10-23 18:44:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-23 18:44:50,598 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 170 [2020-10-23 18:44:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:50,600 INFO L225 Difference]: With dead ends: 288 [2020-10-23 18:44:50,600 INFO L226 Difference]: Without dead ends: 215 [2020-10-23 18:44:50,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1569, Invalid=5403, Unknown=0, NotChecked=0, Total=6972 [2020-10-23 18:44:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-23 18:44:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 151. [2020-10-23 18:44:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-23 18:44:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2020-10-23 18:44:50,617 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 170 [2020-10-23 18:44:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:50,617 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2020-10-23 18:44:50,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-23 18:44:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2020-10-23 18:44:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 18:44:50,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:50,618 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:50,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-23 18:44:50,832 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:50,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2136201976, now seen corresponding path program 22 times [2020-10-23 18:44:50,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:50,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529147795] [2020-10-23 18:44:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:44:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:44:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:44:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:44:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:44:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:44:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:44:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:44:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:44:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:44:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:44:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:44:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:44:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 270 proven. 482 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-23 18:44:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529147795] [2020-10-23 18:44:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750244530] [2020-10-23 18:44:51,228 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:51,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:44:51,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:51,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-23 18:44:51,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:51,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-23 18:44:51,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:51,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 25 [2020-10-23 18:44:51,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245184478] [2020-10-23 18:44:51,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-23 18:44:51,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:51,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-23 18:44:51,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-23 18:44:51,495 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 25 states. [2020-10-23 18:44:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:52,751 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-23 18:44:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 18:44:52,752 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 172 [2020-10-23 18:44:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:52,755 INFO L225 Difference]: With dead ends: 168 [2020-10-23 18:44:52,755 INFO L226 Difference]: Without dead ends: 164 [2020-10-23 18:44:52,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2020-10-23 18:44:52,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-23 18:44:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-23 18:44:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-23 18:44:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 173 transitions. [2020-10-23 18:44:52,773 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 173 transitions. Word has length 172 [2020-10-23 18:44:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:52,774 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 173 transitions. [2020-10-23 18:44:52,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-23 18:44:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 173 transitions. [2020-10-23 18:44:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-23 18:44:52,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:52,775 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:52,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:52,990 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:52,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1410596304, now seen corresponding path program 23 times [2020-10-23 18:44:52,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:52,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908801019] [2020-10-23 18:44:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 18:44:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:44:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:44:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:44:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:44:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:44:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:44:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:44:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:44:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:44:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:44:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:44:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:44:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:44:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:44:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:44:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:44:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 564 proven. 320 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-23 18:44:53,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908801019] [2020-10-23 18:44:53,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870930415] [2020-10-23 18:44:53,929 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:54,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-23 18:44:54,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:54,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-23 18:44:54,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 612 proven. 272 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-23 18:44:55,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:55,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 57 [2020-10-23 18:44:55,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363216214] [2020-10-23 18:44:55,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-23 18:44:55,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-23 18:44:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2485, Unknown=0, NotChecked=0, Total=3192 [2020-10-23 18:44:55,124 INFO L87 Difference]: Start difference. First operand 163 states and 173 transitions. Second operand 57 states. [2020-10-23 18:44:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:57,762 INFO L93 Difference]: Finished difference Result 316 states and 377 transitions. [2020-10-23 18:44:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-23 18:44:57,762 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 188 [2020-10-23 18:44:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:57,765 INFO L225 Difference]: With dead ends: 316 [2020-10-23 18:44:57,765 INFO L226 Difference]: Without dead ends: 233 [2020-10-23 18:44:57,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1814, Invalid=6376, Unknown=0, NotChecked=0, Total=8190 [2020-10-23 18:44:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-23 18:44:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 165. [2020-10-23 18:44:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-23 18:44:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-10-23 18:44:57,784 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 188 [2020-10-23 18:44:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:57,784 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-10-23 18:44:57,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-23 18:44:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-10-23 18:44:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-23 18:44:57,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:57,787 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:58,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-23 18:44:58,000 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:58,001 INFO L82 PathProgramCache]: Analyzing trace with hash -581839563, now seen corresponding path program 24 times [2020-10-23 18:44:58,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:58,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425487042] [2020-10-23 18:44:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 18:44:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 18:44:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:44:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 18:44:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:44:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:44:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:44:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:44:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:44:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:44:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:44:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:44:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:44:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:44:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:44:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:44:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:44:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 564 proven. 354 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-23 18:44:58,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425487042] [2020-10-23 18:44:58,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028837544] [2020-10-23 18:44:58,927 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:59,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-10-23 18:44:59,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:59,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-23 18:44:59,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-23 18:45:00,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:00,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 58 [2020-10-23 18:45:00,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415834768] [2020-10-23 18:45:00,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-23 18:45:00,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-23 18:45:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=727, Invalid=2579, Unknown=0, NotChecked=0, Total=3306 [2020-10-23 18:45:00,169 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 58 states. [2020-10-23 18:45:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:03,069 INFO L93 Difference]: Finished difference Result 320 states and 384 transitions. [2020-10-23 18:45:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 18:45:03,069 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 190 [2020-10-23 18:45:03,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:03,071 INFO L225 Difference]: With dead ends: 320 [2020-10-23 18:45:03,071 INFO L226 Difference]: Without dead ends: 239 [2020-10-23 18:45:03,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1962, Invalid=6780, Unknown=0, NotChecked=0, Total=8742 [2020-10-23 18:45:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-23 18:45:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 167. [2020-10-23 18:45:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-23 18:45:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2020-10-23 18:45:03,088 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 190 [2020-10-23 18:45:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:03,089 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2020-10-23 18:45:03,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-23 18:45:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2020-10-23 18:45:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-23 18:45:03,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:03,090 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:03,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:03,304 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1284438778, now seen corresponding path program 25 times [2020-10-23 18:45:03,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:03,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782957234] [2020-10-23 18:45:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:45:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:45:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:45:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:45:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:45:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:45:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:45:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:45:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:45:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:45:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:45:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:45:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:45:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:45:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:45:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:45:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:45:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 340 proven. 614 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-23 18:45:03,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782957234] [2020-10-23 18:45:03,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306601855] [2020-10-23 18:45:03,771 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:03,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-23 18:45:03,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:03,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:45:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-23 18:45:04,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:04,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 27 [2020-10-23 18:45:04,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563797185] [2020-10-23 18:45:04,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-23 18:45:04,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-23 18:45:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2020-10-23 18:45:04,034 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand 27 states. [2020-10-23 18:45:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:05,493 INFO L93 Difference]: Finished difference Result 184 states and 195 transitions. [2020-10-23 18:45:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 18:45:05,493 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 192 [2020-10-23 18:45:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:05,495 INFO L225 Difference]: With dead ends: 184 [2020-10-23 18:45:05,495 INFO L226 Difference]: Without dead ends: 180 [2020-10-23 18:45:05,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=667, Invalid=1783, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 18:45:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-23 18:45:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2020-10-23 18:45:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-23 18:45:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2020-10-23 18:45:05,512 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 192 [2020-10-23 18:45:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:05,512 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2020-10-23 18:45:05,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-23 18:45:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2020-10-23 18:45:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-23 18:45:05,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:05,514 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:05,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-23 18:45:05,728 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:05,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:05,730 INFO L82 PathProgramCache]: Analyzing trace with hash 169391138, now seen corresponding path program 26 times [2020-10-23 18:45:05,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:05,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613245436] [2020-10-23 18:45:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 18:45:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:45:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:45:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:45:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:45:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:45:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:45:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:45:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:45:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:45:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:45:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:45:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:45:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:45:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:45:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:45:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:45:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:45:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:45:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 706 proven. 396 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-23 18:45:06,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613245436] [2020-10-23 18:45:06,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965396323] [2020-10-23 18:45:06,827 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:06,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:45:06,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-23 18:45:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 828 proven. 342 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-23 18:45:08,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:08,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 40] total 62 [2020-10-23 18:45:08,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889017370] [2020-10-23 18:45:08,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-23 18:45:08,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:08,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-23 18:45:08,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=2957, Unknown=0, NotChecked=0, Total=3782 [2020-10-23 18:45:08,157 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 62 states. [2020-10-23 18:45:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:11,380 INFO L93 Difference]: Finished difference Result 348 states and 416 transitions. [2020-10-23 18:45:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-23 18:45:11,381 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 208 [2020-10-23 18:45:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:11,384 INFO L225 Difference]: With dead ends: 348 [2020-10-23 18:45:11,384 INFO L226 Difference]: Without dead ends: 257 [2020-10-23 18:45:11,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2608 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2195, Invalid=7705, Unknown=0, NotChecked=0, Total=9900 [2020-10-23 18:45:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-23 18:45:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 181. [2020-10-23 18:45:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-23 18:45:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2020-10-23 18:45:11,403 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 208 [2020-10-23 18:45:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:11,403 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2020-10-23 18:45:11,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-23 18:45:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2020-10-23 18:45:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-23 18:45:11,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:11,405 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:11,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-23 18:45:11,619 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:11,620 INFO L82 PathProgramCache]: Analyzing trace with hash -397159769, now seen corresponding path program 27 times [2020-10-23 18:45:11,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:11,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673754695] [2020-10-23 18:45:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 18:45:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-23 18:45:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 18:45:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:45:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:45:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:45:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:45:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:45:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:45:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:45:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:45:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:45:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:45:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:45:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:45:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:45:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:45:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:45:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:45:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-23 18:45:12,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673754695] [2020-10-23 18:45:12,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072327062] [2020-10-23 18:45:12,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:12,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2020-10-23 18:45:12,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:12,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 42 conjunts are in the unsatisfiable core [2020-10-23 18:45:12,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-23 18:45:14,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:14,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 64 [2020-10-23 18:45:14,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903634030] [2020-10-23 18:45:14,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-23 18:45:14,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:14,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-23 18:45:14,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=3145, Unknown=0, NotChecked=0, Total=4032 [2020-10-23 18:45:14,207 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 64 states. [2020-10-23 18:45:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:17,502 INFO L93 Difference]: Finished difference Result 352 states and 423 transitions. [2020-10-23 18:45:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-23 18:45:17,503 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 210 [2020-10-23 18:45:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:17,505 INFO L225 Difference]: With dead ends: 352 [2020-10-23 18:45:17,505 INFO L226 Difference]: Without dead ends: 263 [2020-10-23 18:45:17,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2807 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2399, Invalid=8313, Unknown=0, NotChecked=0, Total=10712 [2020-10-23 18:45:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-23 18:45:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 183. [2020-10-23 18:45:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-23 18:45:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2020-10-23 18:45:17,523 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 210 [2020-10-23 18:45:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:17,524 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2020-10-23 18:45:17,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-23 18:45:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2020-10-23 18:45:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 18:45:17,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:17,526 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:17,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:17,741 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:17,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 608265196, now seen corresponding path program 28 times [2020-10-23 18:45:17,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:17,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238187584] [2020-10-23 18:45:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:45:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:45:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:45:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:45:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:45:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:45:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:45:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:45:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:45:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:45:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:45:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:45:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:45:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:45:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:45:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:45:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:45:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:45:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:45:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 418 proven. 762 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-23 18:45:18,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238187584] [2020-10-23 18:45:18,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137533733] [2020-10-23 18:45:18,269 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:18,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:45:18,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:18,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-23 18:45:18,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:18,464 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:45:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-23 18:45:18,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:18,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 29 [2020-10-23 18:45:18,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227413524] [2020-10-23 18:45:18,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-23 18:45:18,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-23 18:45:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2020-10-23 18:45:18,542 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand 29 states. [2020-10-23 18:45:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:20,162 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2020-10-23 18:45:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 18:45:20,163 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 212 [2020-10-23 18:45:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:20,165 INFO L225 Difference]: With dead ends: 200 [2020-10-23 18:45:20,165 INFO L226 Difference]: Without dead ends: 196 [2020-10-23 18:45:20,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=796, Invalid=2066, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 18:45:20,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-23 18:45:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-10-23 18:45:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-23 18:45:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2020-10-23 18:45:20,183 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 212 [2020-10-23 18:45:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:20,183 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2020-10-23 18:45:20,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-23 18:45:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2020-10-23 18:45:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-23 18:45:20,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:20,185 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:20,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:20,401 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:20,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:20,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2138113772, now seen corresponding path program 29 times [2020-10-23 18:45:20,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:20,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835900864] [2020-10-23 18:45:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 18:45:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:45:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:45:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:45:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:45:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:45:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:45:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:45:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:45:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:45:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:45:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:45:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:45:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:45:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:45:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:45:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:45:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:45:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:45:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:45:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:45:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 864 proven. 480 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-23 18:45:21,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835900864] [2020-10-23 18:45:21,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483679432] [2020-10-23 18:45:21,679 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:21,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2020-10-23 18:45:21,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:21,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-23 18:45:21,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 924 proven. 420 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-23 18:45:23,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:23,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 69 [2020-10-23 18:45:23,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062082645] [2020-10-23 18:45:23,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-23 18:45:23,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:23,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-23 18:45:23,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3653, Unknown=0, NotChecked=0, Total=4692 [2020-10-23 18:45:23,379 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 69 states. [2020-10-23 18:45:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:27,092 INFO L93 Difference]: Finished difference Result 380 states and 455 transitions. [2020-10-23 18:45:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-23 18:45:27,093 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 228 [2020-10-23 18:45:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:27,095 INFO L225 Difference]: With dead ends: 380 [2020-10-23 18:45:27,096 INFO L226 Difference]: Without dead ends: 281 [2020-10-23 18:45:27,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3243 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2700, Invalid=9510, Unknown=0, NotChecked=0, Total=12210 [2020-10-23 18:45:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-23 18:45:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 197. [2020-10-23 18:45:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-23 18:45:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 209 transitions. [2020-10-23 18:45:27,114 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 209 transitions. Word has length 228 [2020-10-23 18:45:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:27,114 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 209 transitions. [2020-10-23 18:45:27,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-23 18:45:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 209 transitions. [2020-10-23 18:45:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-23 18:45:27,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:27,116 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:27,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-23 18:45:27,330 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1803985689, now seen corresponding path program 30 times [2020-10-23 18:45:27,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:27,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082101673] [2020-10-23 18:45:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 18:45:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:45:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 18:45:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:45:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:45:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:45:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:45:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:45:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:45:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:45:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:45:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:45:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:45:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:45:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:45:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:45:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:45:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:45:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:45:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:45:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:45:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 864 proven. 522 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-23 18:45:28,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082101673] [2020-10-23 18:45:28,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590990860] [2020-10-23 18:45:28,645 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:28,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2020-10-23 18:45:28,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:28,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-23 18:45:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-23 18:45:30,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:30,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 70 [2020-10-23 18:45:30,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112279144] [2020-10-23 18:45:30,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-23 18:45:30,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:30,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-23 18:45:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1063, Invalid=3767, Unknown=0, NotChecked=0, Total=4830 [2020-10-23 18:45:30,393 INFO L87 Difference]: Start difference. First operand 197 states and 209 transitions. Second operand 70 states. [2020-10-23 18:45:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:34,033 INFO L93 Difference]: Finished difference Result 384 states and 462 transitions. [2020-10-23 18:45:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-23 18:45:34,034 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 230 [2020-10-23 18:45:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:34,037 INFO L225 Difference]: With dead ends: 384 [2020-10-23 18:45:34,037 INFO L226 Difference]: Without dead ends: 287 [2020-10-23 18:45:34,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2880, Invalid=10002, Unknown=0, NotChecked=0, Total=12882 [2020-10-23 18:45:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-23 18:45:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 199. [2020-10-23 18:45:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-23 18:45:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 211 transitions. [2020-10-23 18:45:34,054 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 211 transitions. Word has length 230 [2020-10-23 18:45:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:34,055 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 211 transitions. [2020-10-23 18:45:34,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-23 18:45:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 211 transitions. [2020-10-23 18:45:34,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-23 18:45:34,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:34,057 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:34,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:34,270 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2000412638, now seen corresponding path program 31 times [2020-10-23 18:45:34,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:34,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295193646] [2020-10-23 18:45:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:45:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:45:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:45:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:45:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:45:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:45:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:45:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:45:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:45:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:45:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:45:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:45:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:45:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:45:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:45:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:45:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:45:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:45:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:45:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:45:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:45:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 504 proven. 926 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-23 18:45:34,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295193646] [2020-10-23 18:45:34,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766269230] [2020-10-23 18:45:34,967 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:35,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-23 18:45:35,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:35,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:45:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-23 18:45:35,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:35,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 31 [2020-10-23 18:45:35,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716981307] [2020-10-23 18:45:35,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-23 18:45:35,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:35,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-23 18:45:35,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2020-10-23 18:45:35,286 INFO L87 Difference]: Start difference. First operand 199 states and 211 transitions. Second operand 31 states. [2020-10-23 18:45:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:37,149 INFO L93 Difference]: Finished difference Result 216 states and 229 transitions. [2020-10-23 18:45:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-23 18:45:37,150 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 232 [2020-10-23 18:45:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:37,152 INFO L225 Difference]: With dead ends: 216 [2020-10-23 18:45:37,152 INFO L226 Difference]: Without dead ends: 212 [2020-10-23 18:45:37,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=937, Invalid=2369, Unknown=0, NotChecked=0, Total=3306 [2020-10-23 18:45:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-23 18:45:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2020-10-23 18:45:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-23 18:45:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 224 transitions. [2020-10-23 18:45:37,171 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 224 transitions. Word has length 232 [2020-10-23 18:45:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:37,172 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 224 transitions. [2020-10-23 18:45:37,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-23 18:45:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 224 transitions. [2020-10-23 18:45:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-23 18:45:37,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:37,173 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:37,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-23 18:45:37,374 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2110214406, now seen corresponding path program 32 times [2020-10-23 18:45:37,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:37,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820414199] [2020-10-23 18:45:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 18:45:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:45:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:45:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:45:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:45:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:45:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:45:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:45:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:45:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:45:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:45:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:45:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:45:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:45:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:45:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:45:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:45:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:45:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:45:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:45:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:45:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:45:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:45:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1038 proven. 572 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-23 18:45:38,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820414199] [2020-10-23 18:45:38,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320576526] [2020-10-23 18:45:38,927 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:39,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:45:39,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:39,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 48 conjunts are in the unsatisfiable core [2020-10-23 18:45:39,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1188 proven. 506 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2020-10-23 18:45:40,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:40,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 48] total 74 [2020-10-23 18:45:40,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358286339] [2020-10-23 18:45:40,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-23 18:45:40,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:40,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-23 18:45:40,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1181, Invalid=4221, Unknown=0, NotChecked=0, Total=5402 [2020-10-23 18:45:40,835 INFO L87 Difference]: Start difference. First operand 211 states and 224 transitions. Second operand 74 states. [2020-10-23 18:45:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:45,104 INFO L93 Difference]: Finished difference Result 412 states and 494 transitions. [2020-10-23 18:45:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-23 18:45:45,105 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 248 [2020-10-23 18:45:45,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:45,108 INFO L225 Difference]: With dead ends: 412 [2020-10-23 18:45:45,108 INFO L226 Difference]: Without dead ends: 305 [2020-10-23 18:45:45,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3804 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3161, Invalid=11119, Unknown=0, NotChecked=0, Total=14280 [2020-10-23 18:45:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-23 18:45:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 213. [2020-10-23 18:45:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-23 18:45:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2020-10-23 18:45:45,128 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 248 [2020-10-23 18:45:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:45,128 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2020-10-23 18:45:45,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-23 18:45:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2020-10-23 18:45:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-23 18:45:45,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:45,130 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:45,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-23 18:45:45,345 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 423806603, now seen corresponding path program 33 times [2020-10-23 18:45:45,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:45,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179488981] [2020-10-23 18:45:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-23 18:45:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 18:45:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:45:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:45:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:45:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:45:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:45:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:45:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:45:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:45:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:45:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:45:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:45:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:45:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:45:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:45:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:45:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:45:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:45:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:45:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:45:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:45:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:45:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-23 18:45:46,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179488981] [2020-10-23 18:45:46,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655473104] [2020-10-23 18:45:46,959 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:47,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-10-23 18:45:47,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:47,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-23 18:45:47,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-23 18:45:49,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:49,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 76 [2020-10-23 18:45:49,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476818605] [2020-10-23 18:45:49,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-23 18:45:49,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:49,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-23 18:45:49,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1255, Invalid=4445, Unknown=0, NotChecked=0, Total=5700 [2020-10-23 18:45:49,059 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 76 states. [2020-10-23 18:45:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:53,723 INFO L93 Difference]: Finished difference Result 416 states and 501 transitions. [2020-10-23 18:45:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 18:45:53,723 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 250 [2020-10-23 18:45:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:53,726 INFO L225 Difference]: With dead ends: 416 [2020-10-23 18:45:53,727 INFO L226 Difference]: Without dead ends: 311 [2020-10-23 18:45:53,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4043 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3405, Invalid=11847, Unknown=0, NotChecked=0, Total=15252 [2020-10-23 18:45:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-23 18:45:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 215. [2020-10-23 18:45:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-23 18:45:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 228 transitions. [2020-10-23 18:45:53,748 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 228 transitions. Word has length 250 [2020-10-23 18:45:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:53,748 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 228 transitions. [2020-10-23 18:45:53,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-23 18:45:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 228 transitions. [2020-10-23 18:45:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-23 18:45:53,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:53,750 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:53,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-23 18:45:53,964 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1011421488, now seen corresponding path program 34 times [2020-10-23 18:45:53,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:53,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222295442] [2020-10-23 18:45:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:45:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:45:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:45:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:45:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:45:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:45:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:45:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:45:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:45:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:45:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:45:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:45:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:45:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:45:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:45:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:45:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:45:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:45:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:45:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:45:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:45:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:45:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:45:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 598 proven. 1106 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-23 18:45:54,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222295442] [2020-10-23 18:45:54,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277960010] [2020-10-23 18:45:54,732 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:54,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:45:54,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:54,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 51 conjunts are in the unsatisfiable core [2020-10-23 18:45:54,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:54,967 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:45:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-23 18:45:55,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:55,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 33 [2020-10-23 18:45:55,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079091475] [2020-10-23 18:45:55,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-23 18:45:55,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:55,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-23 18:45:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 18:45:55,062 INFO L87 Difference]: Start difference. First operand 215 states and 228 transitions. Second operand 33 states. [2020-10-23 18:45:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:57,120 INFO L93 Difference]: Finished difference Result 232 states and 246 transitions. [2020-10-23 18:45:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-23 18:45:57,121 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 252 [2020-10-23 18:45:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:57,123 INFO L225 Difference]: With dead ends: 232 [2020-10-23 18:45:57,123 INFO L226 Difference]: Without dead ends: 228 [2020-10-23 18:45:57,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1090, Invalid=2692, Unknown=0, NotChecked=0, Total=3782 [2020-10-23 18:45:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-23 18:45:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2020-10-23 18:45:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-23 18:45:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 241 transitions. [2020-10-23 18:45:57,142 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 241 transitions. Word has length 252 [2020-10-23 18:45:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:57,143 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 241 transitions. [2020-10-23 18:45:57,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-23 18:45:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 241 transitions. [2020-10-23 18:45:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-23 18:45:57,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:57,145 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:57,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-23 18:45:57,361 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash -17155080, now seen corresponding path program 35 times [2020-10-23 18:45:57,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:57,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621653689] [2020-10-23 18:45:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 18:45:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:45:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:45:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:45:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:45:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:45:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:45:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:45:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:45:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:45:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:45:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:45:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:45:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:45:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:45:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:45:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:45:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:45:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:45:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:45:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:45:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:45:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:45:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:45:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:45:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1228 proven. 672 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-23 18:45:59,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621653689] [2020-10-23 18:45:59,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439938142] [2020-10-23 18:45:59,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:59,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2020-10-23 18:45:59,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:59,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-23 18:45:59,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1300 proven. 600 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-23 18:46:01,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:01,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 81 [2020-10-23 18:46:01,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519018895] [2020-10-23 18:46:01,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-23 18:46:01,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-23 18:46:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=5045, Unknown=0, NotChecked=0, Total=6480 [2020-10-23 18:46:01,574 INFO L87 Difference]: Start difference. First operand 227 states and 241 transitions. Second operand 81 states. [2020-10-23 18:46:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:06,203 INFO L93 Difference]: Finished difference Result 444 states and 533 transitions. [2020-10-23 18:46:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-23 18:46:06,204 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 268 [2020-10-23 18:46:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:06,206 INFO L225 Difference]: With dead ends: 444 [2020-10-23 18:46:06,206 INFO L226 Difference]: Without dead ends: 329 [2020-10-23 18:46:06,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4563 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3762, Invalid=13268, Unknown=0, NotChecked=0, Total=17030 [2020-10-23 18:46:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-23 18:46:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 229. [2020-10-23 18:46:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-23 18:46:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2020-10-23 18:46:06,236 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 268 [2020-10-23 18:46:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:06,236 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2020-10-23 18:46:06,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-23 18:46:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2020-10-23 18:46:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-23 18:46:06,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:06,238 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:06,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-23 18:46:06,452 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2103395075, now seen corresponding path program 36 times [2020-10-23 18:46:06,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:06,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410529315] [2020-10-23 18:46:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:46:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 18:46:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:46:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:46:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:46:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:46:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:46:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:46:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:46:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:46:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:46:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:46:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:46:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:46:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:46:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:46:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:46:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:46:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:46:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:46:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 18:46:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 18:46:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-23 18:46:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 18:46:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:46:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1228 proven. 722 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-23 18:46:08,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410529315] [2020-10-23 18:46:08,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635204586] [2020-10-23 18:46:08,485 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:08,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2020-10-23 18:46:08,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:46:08,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 54 conjunts are in the unsatisfiable core [2020-10-23 18:46:08,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-23 18:46:10,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:10,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 82 [2020-10-23 18:46:10,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593691570] [2020-10-23 18:46:10,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-23 18:46:10,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:10,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-23 18:46:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1463, Invalid=5179, Unknown=0, NotChecked=0, Total=6642 [2020-10-23 18:46:10,975 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 82 states. [2020-10-23 18:46:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:16,404 INFO L93 Difference]: Finished difference Result 448 states and 540 transitions. [2020-10-23 18:46:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-23 18:46:16,405 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 270 [2020-10-23 18:46:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:16,408 INFO L225 Difference]: With dead ends: 448 [2020-10-23 18:46:16,408 INFO L226 Difference]: Without dead ends: 335 [2020-10-23 18:46:16,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4745 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=3974, Invalid=13848, Unknown=0, NotChecked=0, Total=17822 [2020-10-23 18:46:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-23 18:46:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 231. [2020-10-23 18:46:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-23 18:46:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 245 transitions. [2020-10-23 18:46:16,430 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 245 transitions. Word has length 270 [2020-10-23 18:46:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:16,430 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 245 transitions. [2020-10-23 18:46:16,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-23 18:46:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 245 transitions. [2020-10-23 18:46:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-23 18:46:16,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:16,432 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:16,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-23 18:46:16,647 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1230303038, now seen corresponding path program 37 times [2020-10-23 18:46:16,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:16,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90775507] [2020-10-23 18:46:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:46:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:46:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:46:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:46:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:46:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:46:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:46:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:46:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:46:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:46:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:46:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:46:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:46:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:46:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:46:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:46:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:46:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:46:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:46:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:46:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:46:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:46:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:46:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:46:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:46:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 700 proven. 1302 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-23 18:46:17,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90775507] [2020-10-23 18:46:17,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436232248] [2020-10-23 18:46:17,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 55 conjunts are in the unsatisfiable core [2020-10-23 18:46:17,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:17,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:46:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-23 18:46:17,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:17,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 35 [2020-10-23 18:46:17,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067215023] [2020-10-23 18:46:17,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-23 18:46:17,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:17,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-23 18:46:17,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=769, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 18:46:17,837 INFO L87 Difference]: Start difference. First operand 231 states and 245 transitions. Second operand 35 states. [2020-10-23 18:46:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:20,121 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2020-10-23 18:46:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 18:46:20,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 272 [2020-10-23 18:46:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:20,125 INFO L225 Difference]: With dead ends: 248 [2020-10-23 18:46:20,125 INFO L226 Difference]: Without dead ends: 244 [2020-10-23 18:46:20,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1255, Invalid=3035, Unknown=0, NotChecked=0, Total=4290 [2020-10-23 18:46:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-23 18:46:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2020-10-23 18:46:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-23 18:46:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2020-10-23 18:46:20,146 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 272 [2020-10-23 18:46:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:20,147 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2020-10-23 18:46:20,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-23 18:46:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2020-10-23 18:46:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-23 18:46:20,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:20,149 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:20,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-23 18:46:20,363 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:20,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1340065302, now seen corresponding path program 38 times [2020-10-23 18:46:20,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:20,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039369960] [2020-10-23 18:46:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-23 18:46:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:46:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:46:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:46:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:46:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:46:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:46:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:46:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:46:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:46:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:46:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:46:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:46:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:46:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:46:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:46:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:46:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:46:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:46:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:46:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:46:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:46:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:46:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:46:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:46:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:46:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:46:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1434 proven. 780 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-23 18:46:22,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039369960] [2020-10-23 18:46:22,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726686183] [2020-10-23 18:46:22,512 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:22,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:46:22,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:46:22,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 56 conjunts are in the unsatisfiable core [2020-10-23 18:46:22,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1612 proven. 702 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2020-10-23 18:46:25,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:25,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56] total 86 [2020-10-23 18:46:25,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039297151] [2020-10-23 18:46:25,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-23 18:46:25,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:25,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-23 18:46:25,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=5709, Unknown=0, NotChecked=0, Total=7310 [2020-10-23 18:46:25,212 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 86 states. [2020-10-23 18:46:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:30,923 INFO L93 Difference]: Finished difference Result 476 states and 572 transitions. [2020-10-23 18:46:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-23 18:46:30,924 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 288 [2020-10-23 18:46:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:30,926 INFO L225 Difference]: With dead ends: 476 [2020-10-23 18:46:30,927 INFO L226 Difference]: Without dead ends: 353 [2020-10-23 18:46:30,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5224 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4303, Invalid=15157, Unknown=0, NotChecked=0, Total=19460 [2020-10-23 18:46:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-23 18:46:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 245. [2020-10-23 18:46:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-23 18:46:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 260 transitions. [2020-10-23 18:46:30,949 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 260 transitions. Word has length 288 [2020-10-23 18:46:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:30,949 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 260 transitions. [2020-10-23 18:46:30,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-23 18:46:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 260 transitions. [2020-10-23 18:46:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-23 18:46:30,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:30,951 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:31,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:31,165 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash 930678383, now seen corresponding path program 39 times [2020-10-23 18:46:31,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:31,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662263284] [2020-10-23 18:46:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 18:46:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:46:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:46:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:46:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:46:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:46:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:46:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:46:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:46:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:46:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:46:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:46:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:46:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:46:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:46:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:46:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:46:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:46:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:46:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:46:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:46:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:46:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-23 18:46:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-23 18:46:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 18:46:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-23 18:46:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-23 18:46:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1434 proven. 834 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-23 18:46:33,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662263284] [2020-10-23 18:46:33,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47149943] [2020-10-23 18:46:33,329 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:33,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-10-23 18:46:33,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:46:33,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 58 conjunts are in the unsatisfiable core [2020-10-23 18:46:33,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-23 18:46:36,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:36,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 88 [2020-10-23 18:46:36,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312374748] [2020-10-23 18:46:36,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-23 18:46:36,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:36,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-23 18:46:36,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1687, Invalid=5969, Unknown=0, NotChecked=0, Total=7656 [2020-10-23 18:46:36,225 INFO L87 Difference]: Start difference. First operand 245 states and 260 transitions. Second operand 88 states. [2020-10-23 18:46:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:42,429 INFO L93 Difference]: Finished difference Result 480 states and 579 transitions. [2020-10-23 18:46:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-23 18:46:42,430 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 290 [2020-10-23 18:46:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:42,433 INFO L225 Difference]: With dead ends: 480 [2020-10-23 18:46:42,433 INFO L226 Difference]: Without dead ends: 359 [2020-10-23 18:46:42,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5503 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4587, Invalid=16005, Unknown=0, NotChecked=0, Total=20592 [2020-10-23 18:46:42,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-23 18:46:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 247. [2020-10-23 18:46:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-23 18:46:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 262 transitions. [2020-10-23 18:46:42,457 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 262 transitions. Word has length 290 [2020-10-23 18:46:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:42,458 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 262 transitions. [2020-10-23 18:46:42,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-23 18:46:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 262 transitions. [2020-10-23 18:46:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-23 18:46:42,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:42,460 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:42,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:42,676 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1271973300, now seen corresponding path program 40 times [2020-10-23 18:46:42,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:42,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009676056] [2020-10-23 18:46:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:46:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:46:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:46:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:46:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:46:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:46:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:46:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:46:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:46:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:46:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:46:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:46:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:46:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:46:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:46:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:46:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:46:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:46:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:46:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:46:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:46:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:46:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:46:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:46:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:46:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:46:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:46:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 810 proven. 1514 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-23 18:46:43,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009676056] [2020-10-23 18:46:43,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853691298] [2020-10-23 18:46:43,657 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:43,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:46:43,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:46:43,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 59 conjunts are in the unsatisfiable core [2020-10-23 18:46:43,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:43,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:46:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-23 18:46:44,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:44,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 37 [2020-10-23 18:46:44,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365330957] [2020-10-23 18:46:44,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-23 18:46:44,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:44,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-23 18:46:44,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 18:46:44,054 INFO L87 Difference]: Start difference. First operand 247 states and 262 transitions. Second operand 37 states. [2020-10-23 18:46:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:46,428 INFO L93 Difference]: Finished difference Result 264 states and 280 transitions. [2020-10-23 18:46:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-23 18:46:46,429 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 292 [2020-10-23 18:46:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:46,431 INFO L225 Difference]: With dead ends: 264 [2020-10-23 18:46:46,432 INFO L226 Difference]: Without dead ends: 260 [2020-10-23 18:46:46,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1432, Invalid=3398, Unknown=0, NotChecked=0, Total=4830 [2020-10-23 18:46:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-23 18:46:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2020-10-23 18:46:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-23 18:46:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 275 transitions. [2020-10-23 18:46:46,454 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 275 transitions. Word has length 292 [2020-10-23 18:46:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:46,455 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 275 transitions. [2020-10-23 18:46:46,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-23 18:46:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 275 transitions. [2020-10-23 18:46:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-23 18:46:46,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:46,457 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:46,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:46,670 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:46,671 INFO L82 PathProgramCache]: Analyzing trace with hash 200395484, now seen corresponding path program 41 times [2020-10-23 18:46:46,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:46,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862692851] [2020-10-23 18:46:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:46:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 18:46:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:46:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:46:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:46:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:46:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:46:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:46:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:46:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:46:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:46:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:46:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:46:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:46:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:46:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:46:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:46:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:46:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:46:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:46:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:46:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:46:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:46:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:46:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:46:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:46:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:46:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:46:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:46:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:46:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:46:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1656 proven. 896 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-23 18:46:49,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862692851] [2020-10-23 18:46:49,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789198088] [2020-10-23 18:46:49,118 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:46:49,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-10-23 18:46:49,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:46:49,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 61 conjunts are in the unsatisfiable core [2020-10-23 18:46:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:46:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1740 proven. 812 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-23 18:46:52,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:46:52,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 93 [2020-10-23 18:46:52,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019394254] [2020-10-23 18:46:52,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-10-23 18:46:52,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:46:52,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-10-23 18:46:52,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6661, Unknown=0, NotChecked=0, Total=8556 [2020-10-23 18:46:52,390 INFO L87 Difference]: Start difference. First operand 259 states and 275 transitions. Second operand 93 states. [2020-10-23 18:46:58,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:46:58,273 INFO L93 Difference]: Finished difference Result 508 states and 611 transitions. [2020-10-23 18:46:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-23 18:46:58,274 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 308 [2020-10-23 18:46:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:46:58,277 INFO L225 Difference]: With dead ends: 508 [2020-10-23 18:46:58,277 INFO L226 Difference]: Without dead ends: 377 [2020-10-23 18:46:58,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6107 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5000, Invalid=17650, Unknown=0, NotChecked=0, Total=22650 [2020-10-23 18:46:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-23 18:46:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 261. [2020-10-23 18:46:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-23 18:46:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 277 transitions. [2020-10-23 18:46:58,301 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 277 transitions. Word has length 308 [2020-10-23 18:46:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:46:58,302 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 277 transitions. [2020-10-23 18:46:58,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-10-23 18:46:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 277 transitions. [2020-10-23 18:46:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-23 18:46:58,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:46:58,304 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:46:58,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-23 18:46:58,527 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:46:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:46:58,528 INFO L82 PathProgramCache]: Analyzing trace with hash -429645087, now seen corresponding path program 42 times [2020-10-23 18:46:58,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:46:58,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730168918] [2020-10-23 18:46:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:46:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:47:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 18:47:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:47:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:47:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:47:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:47:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:47:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:47:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:47:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:47:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:47:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:47:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:47:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:47:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:47:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:47:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:47:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:47:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:47:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:47:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 18:47:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 18:47:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-23 18:47:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 18:47:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:47:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-23 18:47:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-23 18:47:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-23 18:47:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-23 18:47:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-23 18:47:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-23 18:47:01,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730168918] [2020-10-23 18:47:01,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827165558] [2020-10-23 18:47:01,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:01,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2020-10-23 18:47:01,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:47:01,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 62 conjunts are in the unsatisfiable core [2020-10-23 18:47:01,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-23 18:47:04,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:47:04,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 94 [2020-10-23 18:47:04,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107184138] [2020-10-23 18:47:04,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-10-23 18:47:04,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:04,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-10-23 18:47:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1927, Invalid=6815, Unknown=0, NotChecked=0, Total=8742 [2020-10-23 18:47:04,407 INFO L87 Difference]: Start difference. First operand 261 states and 277 transitions. Second operand 94 states. [2020-10-23 18:47:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:11,256 INFO L93 Difference]: Finished difference Result 512 states and 618 transitions. [2020-10-23 18:47:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-23 18:47:11,257 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 310 [2020-10-23 18:47:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:11,260 INFO L225 Difference]: With dead ends: 512 [2020-10-23 18:47:11,260 INFO L226 Difference]: Without dead ends: 383 [2020-10-23 18:47:11,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6317 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=5244, Invalid=18318, Unknown=0, NotChecked=0, Total=23562 [2020-10-23 18:47:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-23 18:47:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 263. [2020-10-23 18:47:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-23 18:47:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 279 transitions. [2020-10-23 18:47:11,286 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 279 transitions. Word has length 310 [2020-10-23 18:47:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:11,287 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 279 transitions. [2020-10-23 18:47:11,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-10-23 18:47:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 279 transitions. [2020-10-23 18:47:11,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-23 18:47:11,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:11,289 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:11,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:11,503 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash -308245082, now seen corresponding path program 43 times [2020-10-23 18:47:11,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:11,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299732088] [2020-10-23 18:47:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:47:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:47:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:47:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:47:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:47:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:47:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:47:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:47:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:47:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:47:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:47:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:47:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:47:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:47:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:47:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:47:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:47:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:47:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:47:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:47:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:47:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:47:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:47:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:47:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:47:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:47:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:47:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:47:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:47:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:47:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 928 proven. 1742 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-23 18:47:12,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299732088] [2020-10-23 18:47:12,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538239063] [2020-10-23 18:47:12,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:12,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 63 conjunts are in the unsatisfiable core [2020-10-23 18:47:12,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:12,978 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:47:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-23 18:47:13,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:47:13,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 39 [2020-10-23 18:47:13,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325505438] [2020-10-23 18:47:13,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-23 18:47:13,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:13,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-23 18:47:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=939, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 18:47:13,143 INFO L87 Difference]: Start difference. First operand 263 states and 279 transitions. Second operand 39 states. [2020-10-23 18:47:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:15,714 INFO L93 Difference]: Finished difference Result 280 states and 297 transitions. [2020-10-23 18:47:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-23 18:47:15,715 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 312 [2020-10-23 18:47:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:15,717 INFO L225 Difference]: With dead ends: 280 [2020-10-23 18:47:15,717 INFO L226 Difference]: Without dead ends: 276 [2020-10-23 18:47:15,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1621, Invalid=3781, Unknown=0, NotChecked=0, Total=5402 [2020-10-23 18:47:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-23 18:47:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2020-10-23 18:47:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-23 18:47:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 292 transitions. [2020-10-23 18:47:15,740 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 292 transitions. Word has length 312 [2020-10-23 18:47:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:15,740 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 292 transitions. [2020-10-23 18:47:15,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-23 18:47:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 292 transitions. [2020-10-23 18:47:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-23 18:47:15,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:15,743 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:15,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:15,958 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2078764750, now seen corresponding path program 44 times [2020-10-23 18:47:15,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:15,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156627196] [2020-10-23 18:47:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:47:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-23 18:47:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:47:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:47:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:47:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:47:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:47:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:47:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:47:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:47:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:47:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:47:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:47:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:47:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:47:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:47:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:47:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:47:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:47:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:47:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:47:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:47:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:47:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:47:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:47:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:47:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:47:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:47:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:47:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:47:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:47:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:47:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1894 proven. 1020 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-23 18:47:18,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156627196] [2020-10-23 18:47:18,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225157660] [2020-10-23 18:47:18,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:18,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:47:18,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:47:18,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 64 conjunts are in the unsatisfiable core [2020-10-23 18:47:18,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 2100 proven. 930 refuted. 0 times theorem prover too weak. 1744 trivial. 0 not checked. [2020-10-23 18:47:22,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:47:22,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 64] total 98 [2020-10-23 18:47:22,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675438861] [2020-10-23 18:47:22,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-10-23 18:47:22,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:22,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-10-23 18:47:22,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2085, Invalid=7421, Unknown=0, NotChecked=0, Total=9506 [2020-10-23 18:47:22,387 INFO L87 Difference]: Start difference. First operand 275 states and 292 transitions. Second operand 98 states. [2020-10-23 18:47:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:29,723 INFO L93 Difference]: Finished difference Result 540 states and 650 transitions. [2020-10-23 18:47:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-23 18:47:29,724 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 328 [2020-10-23 18:47:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:29,727 INFO L225 Difference]: With dead ends: 540 [2020-10-23 18:47:29,727 INFO L226 Difference]: Without dead ends: 401 [2020-10-23 18:47:29,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6868 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=5621, Invalid=19819, Unknown=0, NotChecked=0, Total=25440 [2020-10-23 18:47:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-23 18:47:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 277. [2020-10-23 18:47:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-23 18:47:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 294 transitions. [2020-10-23 18:47:29,750 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 294 transitions. Word has length 328 [2020-10-23 18:47:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:29,751 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 294 transitions. [2020-10-23 18:47:29,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-10-23 18:47:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 294 transitions. [2020-10-23 18:47:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-23 18:47:29,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:29,753 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:29,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-23 18:47:29,967 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:29,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2092601939, now seen corresponding path program 45 times [2020-10-23 18:47:29,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:29,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335885517] [2020-10-23 18:47:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:47:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 18:47:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:47:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:47:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:47:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:47:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:47:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:47:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:47:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:47:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:47:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:47:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:47:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:47:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:47:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:47:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:47:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:47:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:47:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:47:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:47:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:47:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-23 18:47:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-23 18:47:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 18:47:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-23 18:47:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-23 18:47:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-23 18:47:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-23 18:47:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-23 18:47:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-23 18:47:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-23 18:47:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1894 proven. 1082 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-23 18:47:32,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335885517] [2020-10-23 18:47:32,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794384428] [2020-10-23 18:47:32,924 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:33,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2020-10-23 18:47:33,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:47:33,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 66 conjunts are in the unsatisfiable core [2020-10-23 18:47:33,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-23 18:47:36,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:47:36,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 100 [2020-10-23 18:47:36,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867296186] [2020-10-23 18:47:36,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 100 states [2020-10-23 18:47:36,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:36,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2020-10-23 18:47:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2183, Invalid=7717, Unknown=0, NotChecked=0, Total=9900 [2020-10-23 18:47:36,887 INFO L87 Difference]: Start difference. First operand 277 states and 294 transitions. Second operand 100 states. [2020-10-23 18:47:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:44,607 INFO L93 Difference]: Finished difference Result 544 states and 657 transitions. [2020-10-23 18:47:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-23 18:47:44,608 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 330 [2020-10-23 18:47:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:44,610 INFO L225 Difference]: With dead ends: 544 [2020-10-23 18:47:44,610 INFO L226 Difference]: Without dead ends: 407 [2020-10-23 18:47:44,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7187 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=5945, Invalid=20787, Unknown=0, NotChecked=0, Total=26732 [2020-10-23 18:47:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-23 18:47:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 279. [2020-10-23 18:47:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-23 18:47:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 296 transitions. [2020-10-23 18:47:44,637 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 296 transitions. Word has length 330 [2020-10-23 18:47:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:44,638 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 296 transitions. [2020-10-23 18:47:44,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 100 states. [2020-10-23 18:47:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 296 transitions. [2020-10-23 18:47:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-23 18:47:44,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:44,640 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:44,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-23 18:47:44,854 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1789728616, now seen corresponding path program 46 times [2020-10-23 18:47:44,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:44,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619099921] [2020-10-23 18:47:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:47:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:47:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:47:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:47:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:47:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:47:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:47:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:47:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:47:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:47:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:47:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:47:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:47:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:47:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:47:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:47:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:47:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:47:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:47:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:47:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:47:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:47:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:47:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:47:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:47:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:47:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:47:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:47:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:47:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:47:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:47:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:47:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1054 proven. 1986 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-23 18:47:46,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619099921] [2020-10-23 18:47:46,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250721980] [2020-10-23 18:47:46,134 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:46,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:47:46,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:47:46,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-23 18:47:46,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:46,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:47:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-23 18:47:46,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:47:46,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 41 [2020-10-23 18:47:46,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959751616] [2020-10-23 18:47:46,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-23 18:47:46,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:46,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-23 18:47:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 18:47:46,541 INFO L87 Difference]: Start difference. First operand 279 states and 296 transitions. Second operand 41 states. [2020-10-23 18:47:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:49,436 INFO L93 Difference]: Finished difference Result 296 states and 314 transitions. [2020-10-23 18:47:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-23 18:47:49,437 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 332 [2020-10-23 18:47:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:49,440 INFO L225 Difference]: With dead ends: 296 [2020-10-23 18:47:49,440 INFO L226 Difference]: Without dead ends: 292 [2020-10-23 18:47:49,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1822, Invalid=4184, Unknown=0, NotChecked=0, Total=6006 [2020-10-23 18:47:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-23 18:47:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2020-10-23 18:47:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-23 18:47:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 309 transitions. [2020-10-23 18:47:49,465 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 309 transitions. Word has length 332 [2020-10-23 18:47:49,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:49,466 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 309 transitions. [2020-10-23 18:47:49,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-23 18:47:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 309 transitions. [2020-10-23 18:47:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-23 18:47:49,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:49,468 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:49,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-23 18:47:49,682 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2017043904, now seen corresponding path program 47 times [2020-10-23 18:47:49,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:49,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188490266] [2020-10-23 18:47:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:47:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 18:47:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:47:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:47:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:47:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:47:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:47:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:47:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:47:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:47:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:47:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:47:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:47:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:47:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:47:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:47:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:47:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:47:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:47:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:47:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:47:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:47:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:47:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:47:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:47:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:47:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:47:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:47:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:47:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:47:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:47:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:47:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:47:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:47:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2148 proven. 1152 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-23 18:47:52,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188490266] [2020-10-23 18:47:52,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704900042] [2020-10-23 18:47:52,949 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:53,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2020-10-23 18:47:53,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:47:53,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 69 conjunts are in the unsatisfiable core [2020-10-23 18:47:53,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2244 proven. 1056 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-23 18:47:57,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:47:57,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 105 [2020-10-23 18:47:57,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770457857] [2020-10-23 18:47:57,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-10-23 18:47:57,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:57,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-10-23 18:47:57,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8501, Unknown=0, NotChecked=0, Total=10920 [2020-10-23 18:47:57,366 INFO L87 Difference]: Start difference. First operand 291 states and 309 transitions. Second operand 105 states. [2020-10-23 18:48:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:48:05,602 INFO L93 Difference]: Finished difference Result 572 states and 689 transitions. [2020-10-23 18:48:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-23 18:48:05,604 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 348 [2020-10-23 18:48:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:48:05,607 INFO L225 Difference]: With dead ends: 572 [2020-10-23 18:48:05,607 INFO L226 Difference]: Without dead ends: 425 [2020-10-23 18:48:05,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7875 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=6414, Invalid=22656, Unknown=0, NotChecked=0, Total=29070 [2020-10-23 18:48:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-23 18:48:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 293. [2020-10-23 18:48:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-23 18:48:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 311 transitions. [2020-10-23 18:48:05,643 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 311 transitions. Word has length 348 [2020-10-23 18:48:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:48:05,643 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 311 transitions. [2020-10-23 18:48:05,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-10-23 18:48:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 311 transitions. [2020-10-23 18:48:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-23 18:48:05,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:48:05,646 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:48:05,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:05,856 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:48:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:48:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1184158917, now seen corresponding path program 48 times [2020-10-23 18:48:05,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:48:05,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468869723] [2020-10-23 18:48:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:48:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:48:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 18:48:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:48:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:48:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:48:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:48:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:48:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:48:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:48:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:48:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:48:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:48:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:48:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:48:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:48:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:48:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:48:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:48:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:48:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 18:48:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 18:48:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-23 18:48:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 18:48:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:48:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-23 18:48:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-23 18:48:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-23 18:48:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-23 18:48:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-23 18:48:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-23 18:48:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-23 18:48:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-23 18:48:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-23 18:48:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-23 18:48:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-23 18:48:09,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468869723] [2020-10-23 18:48:09,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651112897] [2020-10-23 18:48:09,337 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:09,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2020-10-23 18:48:09,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:48:09,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 70 conjunts are in the unsatisfiable core [2020-10-23 18:48:09,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:48:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-23 18:48:13,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:48:13,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 106 [2020-10-23 18:48:13,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717773742] [2020-10-23 18:48:13,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 106 states [2020-10-23 18:48:13,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:48:13,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2020-10-23 18:48:13,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2455, Invalid=8675, Unknown=0, NotChecked=0, Total=11130 [2020-10-23 18:48:13,854 INFO L87 Difference]: Start difference. First operand 293 states and 311 transitions. Second operand 106 states. [2020-10-23 18:48:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:48:21,852 INFO L93 Difference]: Finished difference Result 576 states and 696 transitions. [2020-10-23 18:48:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-23 18:48:21,853 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 350 [2020-10-23 18:48:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:48:21,857 INFO L225 Difference]: With dead ends: 576 [2020-10-23 18:48:21,857 INFO L226 Difference]: Without dead ends: 431 [2020-10-23 18:48:21,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8113 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=6690, Invalid=23412, Unknown=0, NotChecked=0, Total=30102 [2020-10-23 18:48:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-23 18:48:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 295. [2020-10-23 18:48:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-23 18:48:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 313 transitions. [2020-10-23 18:48:21,890 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 313 transitions. Word has length 350 [2020-10-23 18:48:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:48:21,891 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 313 transitions. [2020-10-23 18:48:21,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2020-10-23 18:48:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 313 transitions. [2020-10-23 18:48:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-23 18:48:21,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:48:21,894 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:48:22,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:22,108 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:48:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:48:22,109 INFO L82 PathProgramCache]: Analyzing trace with hash -354396534, now seen corresponding path program 49 times [2020-10-23 18:48:22,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:48:22,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739166939] [2020-10-23 18:48:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:48:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:48:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:48:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:48:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:48:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:48:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:48:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:48:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:48:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:48:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:48:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:48:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:48:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:48:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:48:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:48:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:48:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:48:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:48:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:48:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:48:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:48:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:48:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:48:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:48:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:48:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:48:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:48:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:48:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:48:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:48:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:48:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:48:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:48:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:48:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1188 proven. 2246 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-23 18:48:23,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739166939] [2020-10-23 18:48:23,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218885302] [2020-10-23 18:48:23,580 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:23,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 71 conjunts are in the unsatisfiable core [2020-10-23 18:48:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:48:23,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:48:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-23 18:48:24,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:48:24,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 43 [2020-10-23 18:48:24,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084019442] [2020-10-23 18:48:24,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-23 18:48:24,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:48:24,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-23 18:48:24,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1125, Unknown=0, NotChecked=0, Total=1806 [2020-10-23 18:48:24,012 INFO L87 Difference]: Start difference. First operand 295 states and 313 transitions. Second operand 43 states. [2020-10-23 18:48:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:48:27,324 INFO L93 Difference]: Finished difference Result 312 states and 331 transitions. [2020-10-23 18:48:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-23 18:48:27,325 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 352 [2020-10-23 18:48:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:48:27,328 INFO L225 Difference]: With dead ends: 312 [2020-10-23 18:48:27,328 INFO L226 Difference]: Without dead ends: 308 [2020-10-23 18:48:27,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2035, Invalid=4607, Unknown=0, NotChecked=0, Total=6642 [2020-10-23 18:48:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-23 18:48:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2020-10-23 18:48:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-23 18:48:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 326 transitions. [2020-10-23 18:48:27,360 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 326 transitions. Word has length 352 [2020-10-23 18:48:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:48:27,360 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 326 transitions. [2020-10-23 18:48:27,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-23 18:48:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 326 transitions. [2020-10-23 18:48:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-23 18:48:27,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:48:27,363 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:48:27,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:27,578 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:48:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:48:27,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1478430798, now seen corresponding path program 50 times [2020-10-23 18:48:27,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:48:27,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471204122] [2020-10-23 18:48:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:48:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:48:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 18:48:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:48:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:48:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:48:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:48:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:48:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:48:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:48:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:48:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:48:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:48:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:48:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:48:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:48:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:48:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:48:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:48:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:48:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:48:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:48:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:48:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:48:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:48:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:48:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:48:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:48:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:48:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:48:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:48:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:48:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:48:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:48:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:48:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:48:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:48:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2418 proven. 1292 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-23 18:48:31,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471204122] [2020-10-23 18:48:31,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512243707] [2020-10-23 18:48:31,404 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:31,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:48:31,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:48:31,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 72 conjunts are in the unsatisfiable core [2020-10-23 18:48:31,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:48:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2652 proven. 1190 refuted. 0 times theorem prover too weak. 2248 trivial. 0 not checked. [2020-10-23 18:48:36,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:48:36,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 72] total 110 [2020-10-23 18:48:36,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756349413] [2020-10-23 18:48:36,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-10-23 18:48:36,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:48:36,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-10-23 18:48:36,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2633, Invalid=9357, Unknown=0, NotChecked=0, Total=11990 [2020-10-23 18:48:36,253 INFO L87 Difference]: Start difference. First operand 307 states and 326 transitions. Second operand 110 states. [2020-10-23 18:48:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:48:44,796 INFO L93 Difference]: Finished difference Result 604 states and 728 transitions. [2020-10-23 18:48:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-23 18:48:44,797 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 368 [2020-10-23 18:48:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:48:44,800 INFO L225 Difference]: With dead ends: 604 [2020-10-23 18:48:44,800 INFO L226 Difference]: Without dead ends: 449 [2020-10-23 18:48:44,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8736 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=7115, Invalid=25105, Unknown=0, NotChecked=0, Total=32220 [2020-10-23 18:48:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-23 18:48:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 309. [2020-10-23 18:48:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-23 18:48:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 328 transitions. [2020-10-23 18:48:44,842 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 328 transitions. Word has length 368 [2020-10-23 18:48:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:48:44,842 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 328 transitions. [2020-10-23 18:48:44,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 110 states. [2020-10-23 18:48:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 328 transitions. [2020-10-23 18:48:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-23 18:48:44,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:48:44,845 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:48:45,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:45,051 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:48:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:48:45,052 INFO L82 PathProgramCache]: Analyzing trace with hash 248212023, now seen corresponding path program 51 times [2020-10-23 18:48:45,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:48:45,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696716118] [2020-10-23 18:48:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:48:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:48:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:48:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:48:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:48:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:48:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:48:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:48:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:48:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:48:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:48:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:48:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:48:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:48:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:48:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:48:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:48:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:48:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:48:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:48:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:48:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:48:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-23 18:48:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-23 18:48:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 18:48:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-23 18:48:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-23 18:48:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-23 18:48:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-23 18:48:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-23 18:48:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-23 18:48:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-23 18:48:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-23 18:48:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-23 18:48:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-23 18:48:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-23 18:48:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-23 18:48:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:48:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-23 18:48:48,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696716118] [2020-10-23 18:48:48,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23675973] [2020-10-23 18:48:48,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:48:49,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2020-10-23 18:48:49,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:48:49,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 74 conjunts are in the unsatisfiable core [2020-10-23 18:48:49,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:48:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-23 18:48:54,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:48:54,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 112 [2020-10-23 18:48:54,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102192125] [2020-10-23 18:48:54,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 112 states [2020-10-23 18:48:54,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:48:54,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2020-10-23 18:48:54,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2743, Invalid=9689, Unknown=0, NotChecked=0, Total=12432 [2020-10-23 18:48:54,225 INFO L87 Difference]: Start difference. First operand 309 states and 328 transitions. Second operand 112 states. [2020-10-23 18:49:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:49:03,220 INFO L93 Difference]: Finished difference Result 608 states and 735 transitions. [2020-10-23 18:49:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-23 18:49:03,221 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 370 [2020-10-23 18:49:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:49:03,224 INFO L225 Difference]: With dead ends: 608 [2020-10-23 18:49:03,224 INFO L226 Difference]: Without dead ends: 455 [2020-10-23 18:49:03,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9095 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=7479, Invalid=26193, Unknown=0, NotChecked=0, Total=33672 [2020-10-23 18:49:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-23 18:49:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 311. [2020-10-23 18:49:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-23 18:49:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 330 transitions. [2020-10-23 18:49:03,255 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 330 transitions. Word has length 370 [2020-10-23 18:49:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:49:03,255 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 330 transitions. [2020-10-23 18:49:03,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 112 states. [2020-10-23 18:49:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 330 transitions. [2020-10-23 18:49:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-23 18:49:03,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:49:03,258 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:49:03,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-23 18:49:03,472 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:49:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:49:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1694586748, now seen corresponding path program 52 times [2020-10-23 18:49:03,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:49:03,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972102661] [2020-10-23 18:49:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:49:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:49:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:49:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:49:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:49:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:49:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:49:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:49:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:49:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:49:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:49:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:49:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:49:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:49:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:49:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:49:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:49:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:49:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:49:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:49:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:49:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:49:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:49:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:49:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:49:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:49:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:49:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:49:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:49:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:49:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:49:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:49:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:49:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:49:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:49:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:49:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:49:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-23 18:49:05,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972102661] [2020-10-23 18:49:05,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962388748] [2020-10-23 18:49:05,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:49:05,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:49:05,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:49:05,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 75 conjunts are in the unsatisfiable core [2020-10-23 18:49:05,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:49:05,433 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:49:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-23 18:49:05,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:49:05,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 45 [2020-10-23 18:49:05,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734762146] [2020-10-23 18:49:05,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-23 18:49:05,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:49:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-23 18:49:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=1224, Unknown=0, NotChecked=0, Total=1980 [2020-10-23 18:49:05,609 INFO L87 Difference]: Start difference. First operand 311 states and 330 transitions. Second operand 45 states. [2020-10-23 18:49:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:49:09,347 INFO L93 Difference]: Finished difference Result 328 states and 348 transitions. [2020-10-23 18:49:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-23 18:49:09,348 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 372 [2020-10-23 18:49:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:49:09,351 INFO L225 Difference]: With dead ends: 328 [2020-10-23 18:49:09,351 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 18:49:09,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2260, Invalid=5050, Unknown=0, NotChecked=0, Total=7310 [2020-10-23 18:49:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 18:49:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2020-10-23 18:49:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-23 18:49:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 343 transitions. [2020-10-23 18:49:09,371 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 343 transitions. Word has length 372 [2020-10-23 18:49:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:49:09,371 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 343 transitions. [2020-10-23 18:49:09,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-23 18:49:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 343 transitions. [2020-10-23 18:49:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-23 18:49:09,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:49:09,373 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:49:09,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:49:09,574 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:49:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:49:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash 9817252, now seen corresponding path program 53 times [2020-10-23 18:49:09,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:49:09,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434277497] [2020-10-23 18:49:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:49:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:49:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 18:49:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:49:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:49:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:49:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:49:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:49:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:49:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:49:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:49:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:49:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:49:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:49:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:49:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:49:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:49:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:49:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:49:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:49:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:49:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:49:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:49:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:49:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:49:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:49:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:49:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:49:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:49:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:49:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:49:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:49:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:49:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:49:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:49:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:49:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:49:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:49:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:49:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-23 18:49:13,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434277497] [2020-10-23 18:49:13,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742981496] [2020-10-23 18:49:13,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:49:14,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) [2020-10-23 18:49:14,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:49:14,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 77 conjunts are in the unsatisfiable core [2020-10-23 18:49:14,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:49:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2812 proven. 1332 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-23 18:49:19,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:49:19,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 117 [2020-10-23 18:49:19,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060784973] [2020-10-23 18:49:19,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-10-23 18:49:19,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:49:19,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-10-23 18:49:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10565, Unknown=0, NotChecked=0, Total=13572 [2020-10-23 18:49:19,851 INFO L87 Difference]: Start difference. First operand 323 states and 343 transitions. Second operand 117 states. [2020-10-23 18:49:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:49:29,493 INFO L93 Difference]: Finished difference Result 636 states and 767 transitions. [2020-10-23 18:49:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-23 18:49:29,494 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 388 [2020-10-23 18:49:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:49:29,497 INFO L225 Difference]: With dead ends: 636 [2020-10-23 18:49:29,498 INFO L226 Difference]: Without dead ends: 473 [2020-10-23 18:49:29,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9867 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=8004, Invalid=28286, Unknown=0, NotChecked=0, Total=36290 [2020-10-23 18:49:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-23 18:49:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 325. [2020-10-23 18:49:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-23 18:49:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 345 transitions. [2020-10-23 18:49:29,524 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 345 transitions. Word has length 388 [2020-10-23 18:49:29,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:49:29,524 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 345 transitions. [2020-10-23 18:49:29,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-10-23 18:49:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 345 transitions. [2020-10-23 18:49:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-23 18:49:29,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:49:29,527 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:49:29,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-23 18:49:29,743 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:49:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:49:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1056363177, now seen corresponding path program 54 times [2020-10-23 18:49:29,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:49:29,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098969895] [2020-10-23 18:49:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:49:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:49:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 18:49:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:49:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:49:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:49:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:49:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:49:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:49:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:49:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:49:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:49:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:49:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:49:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:49:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:49:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:49:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:49:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:49:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 18:49:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 18:49:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-23 18:49:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 18:49:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:49:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-23 18:49:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-23 18:49:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-23 18:49:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-23 18:49:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-23 18:49:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-23 18:49:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-23 18:49:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-23 18:49:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-23 18:49:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-23 18:49:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-23 18:49:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-23 18:49:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-23 18:49:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-23 18:49:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-23 18:49:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-23 18:49:34,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098969895] [2020-10-23 18:49:34,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465795699] [2020-10-23 18:49:34,377 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:49:34,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2020-10-23 18:49:34,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:49:34,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 78 conjunts are in the unsatisfiable core [2020-10-23 18:49:34,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:49:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-23 18:49:40,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:49:40,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 118 [2020-10-23 18:49:40,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604049320] [2020-10-23 18:49:40,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 118 states [2020-10-23 18:49:40,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:49:40,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2020-10-23 18:49:40,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3047, Invalid=10759, Unknown=0, NotChecked=0, Total=13806 [2020-10-23 18:49:40,544 INFO L87 Difference]: Start difference. First operand 325 states and 345 transitions. Second operand 118 states. [2020-10-23 18:49:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:49:50,947 INFO L93 Difference]: Finished difference Result 640 states and 774 transitions. [2020-10-23 18:49:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-23 18:49:50,948 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 390 [2020-10-23 18:49:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:49:50,951 INFO L225 Difference]: With dead ends: 640 [2020-10-23 18:49:50,951 INFO L226 Difference]: Without dead ends: 479 [2020-10-23 18:49:50,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10133 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=8312, Invalid=29130, Unknown=0, NotChecked=0, Total=37442 [2020-10-23 18:49:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-23 18:49:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 327. [2020-10-23 18:49:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-23 18:49:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 347 transitions. [2020-10-23 18:49:50,975 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 347 transitions. Word has length 390 [2020-10-23 18:49:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:49:50,976 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 347 transitions. [2020-10-23 18:49:50,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 118 states. [2020-10-23 18:49:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 347 transitions. [2020-10-23 18:49:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-23 18:49:50,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:49:50,978 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:49:51,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-23 18:49:51,192 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:49:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:49:51,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1764649838, now seen corresponding path program 55 times [2020-10-23 18:49:51,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:49:51,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824382397] [2020-10-23 18:49:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:49:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:49:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:49:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:49:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:49:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:49:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:49:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:49:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:49:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:49:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:49:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:49:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:49:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:49:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:49:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:49:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:49:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:49:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:49:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:49:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:49:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:49:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:49:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:49:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:49:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:49:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:49:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:49:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:49:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:49:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:49:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:49:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:49:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:49:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:49:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:49:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-23 18:49:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-23 18:49:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-23 18:49:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1480 proven. 2814 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-23 18:49:53,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824382397] [2020-10-23 18:49:53,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570782942] [2020-10-23 18:49:53,162 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:49:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:49:53,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 79 conjunts are in the unsatisfiable core [2020-10-23 18:49:53,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:49:53,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:49:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-23 18:49:53,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:49:53,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 47 [2020-10-23 18:49:53,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931251406] [2020-10-23 18:49:53,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-23 18:49:53,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:49:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-23 18:49:53,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=1327, Unknown=0, NotChecked=0, Total=2162 [2020-10-23 18:49:53,664 INFO L87 Difference]: Start difference. First operand 327 states and 347 transitions. Second operand 47 states. [2020-10-23 18:49:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:49:57,824 INFO L93 Difference]: Finished difference Result 344 states and 365 transitions. [2020-10-23 18:49:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-23 18:49:57,826 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 392 [2020-10-23 18:49:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:49:57,828 INFO L225 Difference]: With dead ends: 344 [2020-10-23 18:49:57,829 INFO L226 Difference]: Without dead ends: 340 [2020-10-23 18:49:57,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2497, Invalid=5513, Unknown=0, NotChecked=0, Total=8010 [2020-10-23 18:49:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-23 18:49:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2020-10-23 18:49:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-23 18:49:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 360 transitions. [2020-10-23 18:49:57,852 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 360 transitions. Word has length 392 [2020-10-23 18:49:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:49:57,852 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 360 transitions. [2020-10-23 18:49:57,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-23 18:49:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 360 transitions. [2020-10-23 18:49:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-23 18:49:57,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:49:57,854 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:49:58,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:49:58,055 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:49:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:49:58,056 INFO L82 PathProgramCache]: Analyzing trace with hash -422527850, now seen corresponding path program 56 times [2020-10-23 18:49:58,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:49:58,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674345533] [2020-10-23 18:49:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:49:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:50:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 18:50:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:50:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:50:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:50:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:50:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:50:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:50:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:50:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:50:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:50:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:50:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:50:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:50:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:50:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:50:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:50:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:50:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:50:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:50:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:50:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:50:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:50:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:50:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:50:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:50:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:50:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:50:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:50:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:50:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:50:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:50:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:50:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:50:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:50:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-23 18:50:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-23 18:50:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-23 18:50:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-23 18:50:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-23 18:50:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3006 proven. 1596 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-23 18:50:03,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674345533] [2020-10-23 18:50:03,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809833197] [2020-10-23 18:50:03,149 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:50:03,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:50:03,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:50:03,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 80 conjunts are in the unsatisfiable core [2020-10-23 18:50:03,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:50:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3268 proven. 1482 refuted. 0 times theorem prover too weak. 2816 trivial. 0 not checked. [2020-10-23 18:50:09,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:50:09,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 80] total 122 [2020-10-23 18:50:09,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560957280] [2020-10-23 18:50:09,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 122 states [2020-10-23 18:50:09,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:50:09,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2020-10-23 18:50:09,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3245, Invalid=11517, Unknown=0, NotChecked=0, Total=14762 [2020-10-23 18:50:09,717 INFO L87 Difference]: Start difference. First operand 339 states and 360 transitions. Second operand 122 states. [2020-10-23 18:50:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:50:20,755 INFO L93 Difference]: Finished difference Result 668 states and 806 transitions. [2020-10-23 18:50:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-23 18:50:20,757 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 408 [2020-10-23 18:50:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:50:20,761 INFO L225 Difference]: With dead ends: 668 [2020-10-23 18:50:20,761 INFO L226 Difference]: Without dead ends: 497 [2020-10-23 18:50:20,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=8785, Invalid=31015, Unknown=0, NotChecked=0, Total=39800 [2020-10-23 18:50:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-23 18:50:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 341. [2020-10-23 18:50:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-23 18:50:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 362 transitions. [2020-10-23 18:50:20,796 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 362 transitions. Word has length 408 [2020-10-23 18:50:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:50:20,796 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 362 transitions. [2020-10-23 18:50:20,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 122 states. [2020-10-23 18:50:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 362 transitions. [2020-10-23 18:50:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-23 18:50:20,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:50:20,799 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:50:21,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-23 18:50:21,013 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:50:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:50:21,014 INFO L82 PathProgramCache]: Analyzing trace with hash -9466341, now seen corresponding path program 57 times [2020-10-23 18:50:21,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:50:21,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097164657] [2020-10-23 18:50:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:50:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:50:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:50:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:50:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:50:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:50:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:50:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:50:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:50:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:50:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:50:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:50:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:50:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:50:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:50:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:50:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:50:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:50:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:50:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:50:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:50:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-23 18:50:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-23 18:50:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 18:50:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-23 18:50:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-23 18:50:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-23 18:50:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-23 18:50:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-23 18:50:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-23 18:50:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-23 18:50:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-23 18:50:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-23 18:50:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-23 18:50:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-23 18:50:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-23 18:50:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-23 18:50:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-23 18:50:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-10-23 18:50:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-23 18:50:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-23 18:50:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3006 proven. 1674 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-23 18:50:26,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097164657] [2020-10-23 18:50:26,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336402708] [2020-10-23 18:50:26,314 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 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:50:26,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-10-23 18:50:26,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:50:26,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 82 conjunts are in the unsatisfiable core [2020-10-23 18:50:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:50:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-23 18:50:33,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:50:33,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 124 [2020-10-23 18:50:33,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676638012] [2020-10-23 18:50:33,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 124 states [2020-10-23 18:50:33,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:50:33,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2020-10-23 18:50:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=11885, Unknown=0, NotChecked=0, Total=15252 [2020-10-23 18:50:33,372 INFO L87 Difference]: Start difference. First operand 341 states and 362 transitions. Second operand 124 states. [2020-10-23 18:50:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:50:44,788 INFO L93 Difference]: Finished difference Result 672 states and 813 transitions. [2020-10-23 18:50:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-23 18:50:44,789 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 410 [2020-10-23 18:50:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:50:44,792 INFO L225 Difference]: With dead ends: 672 [2020-10-23 18:50:44,793 INFO L226 Difference]: Without dead ends: 503 [2020-10-23 18:50:44,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11227 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=9189, Invalid=32223, Unknown=0, NotChecked=0, Total=41412 [2020-10-23 18:50:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-23 18:50:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 343. [2020-10-23 18:50:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-23 18:50:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 364 transitions. [2020-10-23 18:50:44,851 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 364 transitions. Word has length 410 [2020-10-23 18:50:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:50:44,852 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 364 transitions. [2020-10-23 18:50:44,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 124 states. [2020-10-23 18:50:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 364 transitions. [2020-10-23 18:50:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-23 18:50:44,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:50:44,855 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:50:45,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:50:45,069 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:50:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:50:45,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1805652576, now seen corresponding path program 58 times [2020-10-23 18:50:45,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:50:45,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170893707] [2020-10-23 18:50:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:50:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:50:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:50:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:50:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:50:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:50:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:50:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:50:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:50:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:50:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:50:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:50:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:50:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:50:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:50:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:50:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:50:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:50:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:50:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:50:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:50:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:50:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:50:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:50:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:50:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:50:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:50:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:50:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:50:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:50:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:50:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:50:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:50:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:50:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:50:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:50:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:50:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:50:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-23 18:50:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-23 18:50:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-23 18:50:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1638 proven. 3122 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-23 18:50:47,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170893707] [2020-10-23 18:50:47,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894000309] [2020-10-23 18:50:47,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:50:47,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:50:47,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:50:47,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 83 conjunts are in the unsatisfiable core [2020-10-23 18:50:47,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:50:47,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:50:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-23 18:50:47,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:50:47,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 49 [2020-10-23 18:50:47,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072993926] [2020-10-23 18:50:47,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-23 18:50:47,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:50:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-23 18:50:47,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=918, Invalid=1434, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 18:50:47,857 INFO L87 Difference]: Start difference. First operand 343 states and 364 transitions. Second operand 49 states. [2020-10-23 18:50:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:50:52,508 INFO L93 Difference]: Finished difference Result 360 states and 382 transitions. [2020-10-23 18:50:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-23 18:50:52,509 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 412 [2020-10-23 18:50:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:50:52,511 INFO L225 Difference]: With dead ends: 360 [2020-10-23 18:50:52,511 INFO L226 Difference]: Without dead ends: 356 [2020-10-23 18:50:52,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2746, Invalid=5996, Unknown=0, NotChecked=0, Total=8742 [2020-10-23 18:50:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-23 18:50:52,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2020-10-23 18:50:52,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-23 18:50:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 377 transitions. [2020-10-23 18:50:52,532 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 377 transitions. Word has length 412 [2020-10-23 18:50:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:50:52,533 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 377 transitions. [2020-10-23 18:50:52,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-23 18:50:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 377 transitions. [2020-10-23 18:50:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-23 18:50:52,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:50:52,536 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:50:52,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-23 18:50:52,750 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:50:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:50:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1305100168, now seen corresponding path program 59 times [2020-10-23 18:50:52,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:50:52,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023037655] [2020-10-23 18:50:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:50:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:50:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 18:50:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:50:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:50:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:50:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:50:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:50:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:50:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:50:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:50:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:50:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:50:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:50:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:50:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:50:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:50:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:50:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:50:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:50:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:50:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:50:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:50:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:50:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:50:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:50:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:50:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:50:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:50:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:50:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:50:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:50:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:50:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:50:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:50:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:50:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:50:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:50:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-23 18:50:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-23 18:50:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-23 18:50:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-23 18:50:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-23 18:50:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:50:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3324 proven. 1760 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-23 18:50:58,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023037655] [2020-10-23 18:50:58,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382790002] [2020-10-23 18:50:58,617 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:50:58,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-10-23 18:50:58,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:50:58,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 85 conjunts are in the unsatisfiable core [2020-10-23 18:50:58,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-23 18:51:06,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:51:06,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 129 [2020-10-23 18:51:06,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019483279] [2020-10-23 18:51:06,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 129 states [2020-10-23 18:51:06,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:06,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2020-10-23 18:51:06,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12853, Unknown=0, NotChecked=0, Total=16512 [2020-10-23 18:51:06,744 INFO L87 Difference]: Start difference. First operand 355 states and 377 transitions. Second operand 129 states. [2020-10-23 18:51:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:19,696 INFO L93 Difference]: Finished difference Result 700 states and 845 transitions. [2020-10-23 18:51:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-23 18:51:19,698 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 428 [2020-10-23 18:51:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:19,702 INFO L225 Difference]: With dead ends: 700 [2020-10-23 18:51:19,702 INFO L226 Difference]: Without dead ends: 521 [2020-10-23 18:51:19,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12083 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=9770, Invalid=34540, Unknown=0, NotChecked=0, Total=44310 [2020-10-23 18:51:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-23 18:51:19,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 357. [2020-10-23 18:51:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-23 18:51:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 379 transitions. [2020-10-23 18:51:19,739 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 379 transitions. Word has length 428 [2020-10-23 18:51:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:19,740 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 379 transitions. [2020-10-23 18:51:19,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 129 states. [2020-10-23 18:51:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 379 transitions. [2020-10-23 18:51:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-23 18:51:19,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:19,762 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:19,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:19,974 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:19,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1464736909, now seen corresponding path program 60 times [2020-10-23 18:51:19,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:19,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123473152] [2020-10-23 18:51:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:51:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-23 18:51:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:51:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:51:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:51:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:51:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:51:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:51:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:51:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:51:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:51:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:51:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:51:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:51:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:51:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:51:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:51:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 18:51:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 18:51:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-23 18:51:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 18:51:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:51:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-23 18:51:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-23 18:51:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-23 18:51:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-23 18:51:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-23 18:51:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-23 18:51:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-23 18:51:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-23 18:51:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-23 18:51:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-23 18:51:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-23 18:51:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-23 18:51:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-23 18:51:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-23 18:51:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-23 18:51:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-23 18:51:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-23 18:51:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-23 18:51:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-10-23 18:51:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-10-23 18:51:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3324 proven. 1842 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-23 18:51:26,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123473152] [2020-10-23 18:51:26,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428571811] [2020-10-23 18:51:26,228 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 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:26,509 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2020-10-23 18:51:26,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:51:26,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 86 conjunts are in the unsatisfiable core [2020-10-23 18:51:26,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-23 18:51:34,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:51:34,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 130 [2020-10-23 18:51:34,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411522629] [2020-10-23 18:51:34,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 130 states [2020-10-23 18:51:34,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:34,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2020-10-23 18:51:34,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3703, Invalid=13067, Unknown=0, NotChecked=0, Total=16770 [2020-10-23 18:51:34,721 INFO L87 Difference]: Start difference. First operand 357 states and 379 transitions. Second operand 130 states. [2020-10-23 18:51:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:48,022 INFO L93 Difference]: Finished difference Result 704 states and 852 transitions. [2020-10-23 18:51:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-23 18:51:48,024 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 430 [2020-10-23 18:51:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:48,028 INFO L225 Difference]: With dead ends: 704 [2020-10-23 18:51:48,028 INFO L226 Difference]: Without dead ends: 527 [2020-10-23 18:51:48,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12377 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=10110, Invalid=35472, Unknown=0, NotChecked=0, Total=45582 [2020-10-23 18:51:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-23 18:51:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 359. [2020-10-23 18:51:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-23 18:51:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 381 transitions. [2020-10-23 18:51:48,056 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 381 transitions. Word has length 430 [2020-10-23 18:51:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:48,056 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 381 transitions. [2020-10-23 18:51:48,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 130 states. [2020-10-23 18:51:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 381 transitions. [2020-10-23 18:51:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-23 18:51:48,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:48,058 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:48,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-23 18:51:48,259 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:48,260 INFO L82 PathProgramCache]: Analyzing trace with hash 256822354, now seen corresponding path program 61 times [2020-10-23 18:51:48,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:48,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949454279] [2020-10-23 18:51:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:51:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:51:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:51:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:51:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:51:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:51:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:51:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:51:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:51:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:51:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:51:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:51:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:51:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:51:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:51:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:51:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:51:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:51:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:51:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:51:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:51:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:51:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:51:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:51:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:51:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:51:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:51:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:51:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:51:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:51:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:51:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:51:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-23 18:51:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-23 18:51:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-23 18:51:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-23 18:51:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-23 18:51:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-23 18:51:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-23 18:51:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-10-23 18:51:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1804 proven. 3446 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-23 18:51:50,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949454279] [2020-10-23 18:51:50,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388766161] [2020-10-23 18:51:50,865 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 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:51:51,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 87 conjunts are in the unsatisfiable core [2020-10-23 18:51:51,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:51:51,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:51:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-23 18:51:51,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:51:51,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 51 [2020-10-23 18:51:51,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187415371] [2020-10-23 18:51:51,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-23 18:51:51,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:51:51,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-23 18:51:51,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=1545, Unknown=0, NotChecked=0, Total=2550 [2020-10-23 18:51:51,463 INFO L87 Difference]: Start difference. First operand 359 states and 381 transitions. Second operand 51 states. [2020-10-23 18:51:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:51:56,818 INFO L93 Difference]: Finished difference Result 376 states and 399 transitions. [2020-10-23 18:51:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-23 18:51:56,820 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 432 [2020-10-23 18:51:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:51:56,823 INFO L225 Difference]: With dead ends: 376 [2020-10-23 18:51:56,823 INFO L226 Difference]: Without dead ends: 372 [2020-10-23 18:51:56,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3007, Invalid=6499, Unknown=0, NotChecked=0, Total=9506 [2020-10-23 18:51:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-23 18:51:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2020-10-23 18:51:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-23 18:51:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 394 transitions. [2020-10-23 18:51:56,847 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 394 transitions. Word has length 432 [2020-10-23 18:51:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:51:56,847 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 394 transitions. [2020-10-23 18:51:56,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-23 18:51:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 394 transitions. [2020-10-23 18:51:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-23 18:51:56,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:51:56,850 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:51:57,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:51:57,052 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:51:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:51:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash -679815814, now seen corresponding path program 62 times [2020-10-23 18:51:57,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:51:57,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501515878] [2020-10-23 18:51:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:51:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:52:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-23 18:52:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:52:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:52:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:52:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:52:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:52:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:52:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:52:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:52:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:52:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:52:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:52:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:52:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:52:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:52:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:52:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:52:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:52:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:52:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:52:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:52:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:52:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:52:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:52:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:52:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:52:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:52:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:52:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:52:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:52:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:52:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:52:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:52:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-23 18:52:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-23 18:52:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-23 18:52:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-23 18:52:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-23 18:52:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-23 18:52:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-23 18:52:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-10-23 18:52:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-10-23 18:52:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-10-23 18:52:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3658 proven. 1932 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-23 18:52:04,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501515878] [2020-10-23 18:52:04,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147220558] [2020-10-23 18:52:04,088 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:52:04,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:52:04,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:52:04,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 88 conjunts are in the unsatisfiable core [2020-10-23 18:52:04,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:52:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3948 proven. 1806 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2020-10-23 18:52:13,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:52:13,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 88] total 134 [2020-10-23 18:52:13,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140867950] [2020-10-23 18:52:13,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 134 states [2020-10-23 18:52:13,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:52:13,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2020-10-23 18:52:13,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3921, Invalid=13901, Unknown=0, NotChecked=0, Total=17822 [2020-10-23 18:52:13,260 INFO L87 Difference]: Start difference. First operand 371 states and 394 transitions. Second operand 134 states. [2020-10-23 18:52:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:52:27,573 INFO L93 Difference]: Finished difference Result 732 states and 884 transitions. [2020-10-23 18:52:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-23 18:52:27,575 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 448 [2020-10-23 18:52:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:52:27,578 INFO L225 Difference]: With dead ends: 732 [2020-10-23 18:52:27,578 INFO L226 Difference]: Without dead ends: 545 [2020-10-23 18:52:27,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13144 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=10631, Invalid=37549, Unknown=0, NotChecked=0, Total=48180 [2020-10-23 18:52:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-23 18:52:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 373. [2020-10-23 18:52:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-23 18:52:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 396 transitions. [2020-10-23 18:52:27,613 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 396 transitions. Word has length 448 [2020-10-23 18:52:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:52:27,613 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 396 transitions. [2020-10-23 18:52:27,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 134 states. [2020-10-23 18:52:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 396 transitions. [2020-10-23 18:52:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-23 18:52:27,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:52:27,615 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:52:27,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-23 18:52:27,817 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:52:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:52:27,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1282080255, now seen corresponding path program 63 times [2020-10-23 18:52:27,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:52:27,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101592103] [2020-10-23 18:52:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:52:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:52:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 18:52:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:52:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:52:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:52:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:52:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:52:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:52:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:52:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:52:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:52:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:52:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:52:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:52:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:52:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:52:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:52:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:52:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:52:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-23 18:52:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-23 18:52:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 18:52:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-23 18:52:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-23 18:52:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-23 18:52:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-23 18:52:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-23 18:52:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-23 18:52:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-23 18:52:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-23 18:52:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-23 18:52:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-23 18:52:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-23 18:52:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-23 18:52:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-23 18:52:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-23 18:52:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-10-23 18:52:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-23 18:52:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-23 18:52:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-23 18:52:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-23 18:52:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-23 18:52:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-23 18:52:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-23 18:52:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:52:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-23 18:52:35,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101592103] [2020-10-23 18:52:35,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621374411] [2020-10-23 18:52:35,011 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:52:35,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2020-10-23 18:52:35,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:52:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 90 conjunts are in the unsatisfiable core [2020-10-23 18:52:35,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:52:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-23 18:52:44,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:52:44,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 136 [2020-10-23 18:52:44,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915024056] [2020-10-23 18:52:44,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 136 states [2020-10-23 18:52:44,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:52:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2020-10-23 18:52:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4055, Invalid=14305, Unknown=0, NotChecked=0, Total=18360 [2020-10-23 18:52:44,773 INFO L87 Difference]: Start difference. First operand 373 states and 396 transitions. Second operand 136 states. [2020-10-23 18:53:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:53:00,714 INFO L93 Difference]: Finished difference Result 736 states and 891 transitions. [2020-10-23 18:53:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-23 18:53:00,715 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 450 [2020-10-23 18:53:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:53:00,718 INFO L225 Difference]: With dead ends: 736 [2020-10-23 18:53:00,719 INFO L226 Difference]: Without dead ends: 551 [2020-10-23 18:53:00,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13583 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=11075, Invalid=38877, Unknown=0, NotChecked=0, Total=49952 [2020-10-23 18:53:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-23 18:53:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 375. [2020-10-23 18:53:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-23 18:53:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 398 transitions. [2020-10-23 18:53:00,745 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 398 transitions. Word has length 450 [2020-10-23 18:53:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:53:00,745 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 398 transitions. [2020-10-23 18:53:00,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 136 states. [2020-10-23 18:53:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 398 transitions. [2020-10-23 18:53:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-23 18:53:00,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:53:00,748 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:53:00,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:53:00,951 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:53:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:53:00,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1173559620, now seen corresponding path program 64 times [2020-10-23 18:53:00,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:53:00,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543242061] [2020-10-23 18:53:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:53:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:53:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:53:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:53:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:53:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:53:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:53:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:53:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:53:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:53:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:53:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:53:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:53:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:53:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:53:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:53:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:53:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:53:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:53:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:53:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:53:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:53:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:53:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:53:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:53:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:53:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:53:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:53:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:53:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:53:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:53:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:53:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:53:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:53:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:53:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:53:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:53:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-23 18:53:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-23 18:53:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-23 18:53:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-23 18:53:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-23 18:53:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-23 18:53:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-23 18:53:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-10-23 18:53:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 1978 proven. 3786 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-23 18:53:03,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543242061] [2020-10-23 18:53:03,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441238127] [2020-10-23 18:53:03,900 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:53:04,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:53:04,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:53:04,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 91 conjunts are in the unsatisfiable core [2020-10-23 18:53:04,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:53:04,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:53:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-23 18:53:04,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:53:04,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 53 [2020-10-23 18:53:04,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139060363] [2020-10-23 18:53:04,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-23 18:53:04,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:53:04,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-23 18:53:04,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1096, Invalid=1660, Unknown=0, NotChecked=0, Total=2756 [2020-10-23 18:53:04,540 INFO L87 Difference]: Start difference. First operand 375 states and 398 transitions. Second operand 53 states. [2020-10-23 18:53:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:53:10,316 INFO L93 Difference]: Finished difference Result 392 states and 416 transitions. [2020-10-23 18:53:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-23 18:53:10,318 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 452 [2020-10-23 18:53:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:53:10,321 INFO L225 Difference]: With dead ends: 392 [2020-10-23 18:53:10,321 INFO L226 Difference]: Without dead ends: 388 [2020-10-23 18:53:10,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3280, Invalid=7022, Unknown=0, NotChecked=0, Total=10302 [2020-10-23 18:53:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-23 18:53:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 387. [2020-10-23 18:53:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-23 18:53:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 411 transitions. [2020-10-23 18:53:10,350 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 411 transitions. Word has length 452 [2020-10-23 18:53:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:53:10,350 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 411 transitions. [2020-10-23 18:53:10,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-23 18:53:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 411 transitions. [2020-10-23 18:53:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-23 18:53:10,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:53:10,353 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:53:10,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-23 18:53:10,554 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:53:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:53:10,555 INFO L82 PathProgramCache]: Analyzing trace with hash -191168916, now seen corresponding path program 65 times [2020-10-23 18:53:10,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:53:10,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517190243] [2020-10-23 18:53:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:53:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:53:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-23 18:53:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:53:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:53:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:53:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:53:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:53:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:53:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:53:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:53:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:53:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:53:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:53:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:53:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:53:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:53:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:53:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:53:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:53:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:53:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:53:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:53:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:53:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:53:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:53:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:53:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:53:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:53:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:53:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:53:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:53:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:53:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:53:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:53:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:53:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:53:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-23 18:53:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-23 18:53:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-23 18:53:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-23 18:53:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-23 18:53:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-23 18:53:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-23 18:53:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-10-23 18:53:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-23 18:53:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-10-23 18:53:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4008 proven. 2112 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-23 18:53:18,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517190243] [2020-10-23 18:53:18,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700980665] [2020-10-23 18:53:18,585 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 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:53:18,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2020-10-23 18:53:18,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:53:18,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 93 conjunts are in the unsatisfiable core [2020-10-23 18:53:18,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:53:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4140 proven. 1980 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-23 18:53:29,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:53:29,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 141 [2020-10-23 18:53:29,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831604395] [2020-10-23 18:53:29,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 141 states [2020-10-23 18:53:29,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:53:29,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2020-10-23 18:53:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=15365, Unknown=0, NotChecked=0, Total=19740 [2020-10-23 18:53:29,875 INFO L87 Difference]: Start difference. First operand 387 states and 411 transitions. Second operand 141 states. [2020-10-23 18:53:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:53:47,267 INFO L93 Difference]: Finished difference Result 764 states and 923 transitions. [2020-10-23 18:53:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-10-23 18:53:47,270 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 468 [2020-10-23 18:53:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:53:47,273 INFO L225 Difference]: With dead ends: 764 [2020-10-23 18:53:47,273 INFO L226 Difference]: Without dead ends: 569 [2020-10-23 18:53:47,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14523 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=11712, Invalid=41418, Unknown=0, NotChecked=0, Total=53130 [2020-10-23 18:53:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-23 18:53:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 389. [2020-10-23 18:53:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-23 18:53:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 413 transitions. [2020-10-23 18:53:47,310 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 413 transitions. Word has length 468 [2020-10-23 18:53:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:53:47,311 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 413 transitions. [2020-10-23 18:53:47,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 141 states. [2020-10-23 18:53:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 413 transitions. [2020-10-23 18:53:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-23 18:53:47,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:53:47,314 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:53:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-23 18:53:47,527 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:53:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:53:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash 56537713, now seen corresponding path program 66 times [2020-10-23 18:53:47,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:53:47,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198759857] [2020-10-23 18:53:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:53:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:53:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 18:53:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 18:53:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-23 18:53:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-23 18:53:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 18:53:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 18:53:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 18:53:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 18:53:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 18:53:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 18:53:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 18:53:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 18:53:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 18:53:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 18:53:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 18:53:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 18:53:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 18:53:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-23 18:53:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 18:53:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:53:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-23 18:53:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-23 18:53:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-23 18:53:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-23 18:53:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-23 18:53:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-23 18:53:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-23 18:53:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-23 18:53:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-23 18:53:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-23 18:53:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-23 18:53:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-23 18:53:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-23 18:53:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-23 18:53:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-23 18:53:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-23 18:53:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-23 18:53:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-23 18:53:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-10-23 18:53:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-10-23 18:53:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-10-23 18:53:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-10-23 18:53:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-10-23 18:53:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-10-23 18:53:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-10-23 18:53:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:53:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-23 18:53:56,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198759857] [2020-10-23 18:53:56,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712538453] [2020-10-23 18:53:56,337 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 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:53:56,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2020-10-23 18:53:56,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:53:56,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 94 conjunts are in the unsatisfiable core [2020-10-23 18:53:56,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:54:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-23 18:54:08,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:54:08,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 142 [2020-10-23 18:54:08,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569706470] [2020-10-23 18:54:08,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 142 states [2020-10-23 18:54:08,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:54:08,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2020-10-23 18:54:08,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4423, Invalid=15599, Unknown=0, NotChecked=0, Total=20022 [2020-10-23 18:54:08,386 INFO L87 Difference]: Start difference. First operand 389 states and 413 transitions. Second operand 142 states. [2020-10-23 18:54:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:54:26,608 INFO L93 Difference]: Finished difference Result 768 states and 930 transitions. [2020-10-23 18:54:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-23 18:54:26,610 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 470 [2020-10-23 18:54:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:54:26,615 INFO L225 Difference]: With dead ends: 768 [2020-10-23 18:54:26,615 INFO L226 Difference]: Without dead ends: 575 [2020-10-23 18:54:26,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14845 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=12084, Invalid=42438, Unknown=0, NotChecked=0, Total=54522 [2020-10-23 18:54:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-23 18:54:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 391. [2020-10-23 18:54:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-23 18:54:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 415 transitions. [2020-10-23 18:54:26,657 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 415 transitions. Word has length 470 [2020-10-23 18:54:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:54:26,657 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 415 transitions. [2020-10-23 18:54:26,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 142 states. [2020-10-23 18:54:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 415 transitions. [2020-10-23 18:54:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-23 18:54:26,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:54:26,661 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:54:26,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-23 18:54:26,877 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:54:26,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:54:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1879406902, now seen corresponding path program 67 times [2020-10-23 18:54:26,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:54:26,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79199399] [2020-10-23 18:54:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:54:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:54:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:54:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:54:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:54:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:54:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:54:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:54:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:54:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:54:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:54:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:54:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:54:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:54:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:54:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:54:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:54:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:54:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:54:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:54:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:54:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:54:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:54:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:54:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:54:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:54:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:54:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:54:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:54:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:54:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:54:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:54:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:54:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:54:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-23 18:54:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-23 18:54:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-23 18:54:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-23 18:54:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-23 18:54:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-23 18:54:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-23 18:54:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-10-23 18:54:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-10-23 18:54:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-10-23 18:54:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-23 18:54:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-10-23 18:54:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-23 18:54:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-23 18:54:30,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79199399] [2020-10-23 18:54:30,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440240398] [2020-10-23 18:54:30,421 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:54:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:30,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 95 conjunts are in the unsatisfiable core [2020-10-23 18:54:30,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:54:30,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:54:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-23 18:54:31,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:54:31,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 55 [2020-10-23 18:54:31,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460693102] [2020-10-23 18:54:31,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-23 18:54:31,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:54:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-23 18:54:31,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1779, Unknown=0, NotChecked=0, Total=2970 [2020-10-23 18:54:31,114 INFO L87 Difference]: Start difference. First operand 391 states and 415 transitions. Second operand 55 states. [2020-10-23 18:54:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:54:38,061 INFO L93 Difference]: Finished difference Result 408 states and 433 transitions. [2020-10-23 18:54:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-23 18:54:38,063 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 472 [2020-10-23 18:54:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:54:38,066 INFO L225 Difference]: With dead ends: 408 [2020-10-23 18:54:38,066 INFO L226 Difference]: Without dead ends: 404 [2020-10-23 18:54:38,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3565, Invalid=7565, Unknown=0, NotChecked=0, Total=11130 [2020-10-23 18:54:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-23 18:54:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2020-10-23 18:54:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-23 18:54:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 428 transitions. [2020-10-23 18:54:38,116 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 428 transitions. Word has length 472 [2020-10-23 18:54:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:54:38,117 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 428 transitions. [2020-10-23 18:54:38,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-23 18:54:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 428 transitions. [2020-10-23 18:54:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-23 18:54:38,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:54:38,119 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:54:38,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:54:38,320 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:54:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:54:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash 77806174, now seen corresponding path program 68 times [2020-10-23 18:54:38,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:54:38,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118327097] [2020-10-23 18:54:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:54:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:54:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-23 18:54:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 18:54:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 18:54:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 18:54:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 18:54:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 18:54:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 18:54:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 18:54:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 18:54:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 18:54:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 18:54:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 18:54:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 18:54:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 18:54:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 18:54:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 18:54:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-23 18:54:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-23 18:54:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-23 18:54:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 18:54:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-23 18:54:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-23 18:54:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:54:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-23 18:54:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-23 18:54:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 18:54:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-23 18:54:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-23 18:54:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-23 18:54:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-23 18:54:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-23 18:54:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-10-23 18:54:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-23 18:54:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-23 18:54:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-23 18:54:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-23 18:54:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-23 18:54:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-23 18:54:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-23 18:54:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-10-23 18:54:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-10-23 18:54:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-10-23 18:54:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-23 18:54:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-10-23 18:54:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-23 18:54:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-10-23 18:54:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-23 18:54:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:54:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-10-23 18:54:48,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118327097] [2020-10-23 18:54:48,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720043467] [2020-10-23 18:54:48,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:54:48,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:54:48,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:54:48,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 96 conjunts are in the unsatisfiable core [2020-10-23 18:54:48,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:55:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2020-10-23 18:55:01,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:55:01,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 96] total 146 [2020-10-23 18:55:01,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064680160] [2020-10-23 18:55:01,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 146 states [2020-10-23 18:55:01,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:55:01,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2020-10-23 18:55:01,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4661, Invalid=16509, Unknown=0, NotChecked=0, Total=21170 [2020-10-23 18:55:01,674 INFO L87 Difference]: Start difference. First operand 403 states and 428 transitions. Second operand 146 states. [2020-10-23 18:55:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:55:21,895 INFO L93 Difference]: Finished difference Result 796 states and 962 transitions. [2020-10-23 18:55:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-23 18:55:21,898 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 488 [2020-10-23 18:55:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:55:21,901 INFO L225 Difference]: With dead ends: 796 [2020-10-23 18:55:21,901 INFO L226 Difference]: Without dead ends: 593 [2020-10-23 18:55:21,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15684 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=12653, Invalid=44707, Unknown=0, NotChecked=0, Total=57360 [2020-10-23 18:55:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-23 18:55:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 405. [2020-10-23 18:55:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-23 18:55:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 430 transitions. [2020-10-23 18:55:21,938 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 430 transitions. Word has length 488 [2020-10-23 18:55:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:55:21,938 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 430 transitions. [2020-10-23 18:55:21,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 146 states. [2020-10-23 18:55:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 430 transitions. [2020-10-23 18:55:21,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-23 18:55:21,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:55:21,941 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:55:22,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:55:22,142 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:55:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:55:22,143 INFO L82 PathProgramCache]: Analyzing trace with hash -545146397, now seen corresponding path program 69 times [2020-10-23 18:55:22,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:55:22,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013833511] [2020-10-23 18:55:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:55:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:55:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 18:55:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-23 18:55:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 18:55:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:55:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 18:55:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 18:55:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 18:55:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 18:55:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 18:55:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-23 18:55:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:55:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 18:55:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 18:55:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 18:55:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 18:55:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 18:55:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-23 18:55:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-23 18:55:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-23 18:55:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-23 18:55:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-23 18:55:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-23 18:55:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-23 18:55:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-23 18:55:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-23 18:55:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-23 18:55:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-23 18:55:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-23 18:55:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-23 18:55:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-23 18:55:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-23 18:55:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-23 18:55:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-23 18:55:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-23 18:55:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-10-23 18:55:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-23 18:55:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-23 18:55:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-23 18:55:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-23 18:55:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-23 18:55:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-23 18:55:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-23 18:55:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-23 18:55:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-23 18:55:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-10-23 18:55:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-10-23 18:55:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-23 18:55:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:55:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-10-23 18:55:32,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013833511] [2020-10-23 18:55:32,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721436767] [2020-10-23 18:55:32,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:55:33,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2020-10-23 18:55:33,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:55:33,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 98 conjunts are in the unsatisfiable core [2020-10-23 18:55:33,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:55:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-10-23 18:55:47,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:55:47,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 148 [2020-10-23 18:55:47,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750974988] [2020-10-23 18:55:47,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 148 states [2020-10-23 18:55:47,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:55:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2020-10-23 18:55:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4807, Invalid=16949, Unknown=0, NotChecked=0, Total=21756 [2020-10-23 18:55:47,496 INFO L87 Difference]: Start difference. First operand 405 states and 430 transitions. Second operand 148 states. [2020-10-23 18:56:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:56:09,614 INFO L93 Difference]: Finished difference Result 800 states and 969 transitions. [2020-10-23 18:56:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-10-23 18:56:09,617 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 490 [2020-10-23 18:56:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:56:09,621 INFO L225 Difference]: With dead ends: 800 [2020-10-23 18:56:09,622 INFO L226 Difference]: Without dead ends: 599 [2020-10-23 18:56:09,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16163 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=13137, Invalid=46155, Unknown=0, NotChecked=0, Total=59292 [2020-10-23 18:56:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-23 18:56:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 407. [2020-10-23 18:56:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-23 18:56:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 432 transitions. [2020-10-23 18:56:09,651 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 432 transitions. Word has length 490 [2020-10-23 18:56:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:56:09,651 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 432 transitions. [2020-10-23 18:56:09,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 148 states. [2020-10-23 18:56:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 432 transitions. [2020-10-23 18:56:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-23 18:56:09,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:56:09,654 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:56:09,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:56:09,855 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:56:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:56:09,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2092854312, now seen corresponding path program 70 times [2020-10-23 18:56:09,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:56:09,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521392377] [2020-10-23 18:56:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:56:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:56:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:56:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:56:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:56:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:56:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:56:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:56:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:56:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:56:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:56:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:56:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:56:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:56:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:56:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:56:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:56:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:56:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:56:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:56:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:56:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:56:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:56:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:56:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:56:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:56:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:56:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:56:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:56:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:56:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:56:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:56:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:56:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:56:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:56:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:56:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-23 18:56:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-23 18:56:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-23 18:56:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-23 18:56:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-23 18:56:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-23 18:56:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-23 18:56:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-10-23 18:56:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-23 18:56:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-10-23 18:56:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-23 18:56:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-23 18:56:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:13,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-23 18:56:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2350 proven. 4514 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-10-23 18:56:14,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521392377] [2020-10-23 18:56:14,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092348180] [2020-10-23 18:56:14,168 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:56:14,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:56:14,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:56:14,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 99 conjunts are in the unsatisfiable core [2020-10-23 18:56:14,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:56:14,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:56:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-10-23 18:56:14,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:56:14,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 57 [2020-10-23 18:56:14,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107795159] [2020-10-23 18:56:14,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-23 18:56:14,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:56:14,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-23 18:56:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1902, Unknown=0, NotChecked=0, Total=3192 [2020-10-23 18:56:14,919 INFO L87 Difference]: Start difference. First operand 407 states and 432 transitions. Second operand 57 states. [2020-10-23 18:56:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:56:23,498 INFO L93 Difference]: Finished difference Result 424 states and 450 transitions. [2020-10-23 18:56:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-23 18:56:23,500 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 492 [2020-10-23 18:56:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:56:23,503 INFO L225 Difference]: With dead ends: 424 [2020-10-23 18:56:23,503 INFO L226 Difference]: Without dead ends: 420 [2020-10-23 18:56:23,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=3862, Invalid=8128, Unknown=0, NotChecked=0, Total=11990 [2020-10-23 18:56:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-23 18:56:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2020-10-23 18:56:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-23 18:56:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 445 transitions. [2020-10-23 18:56:23,530 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 445 transitions. Word has length 492 [2020-10-23 18:56:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:56:23,531 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 445 transitions. [2020-10-23 18:56:23,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-23 18:56:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 445 transitions. [2020-10-23 18:56:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-23 18:56:23,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:56:23,535 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:56:23,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-23 18:56:23,748 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:56:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:56:23,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1976306000, now seen corresponding path program 71 times [2020-10-23 18:56:23,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:56:23,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747839588] [2020-10-23 18:56:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:56:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:56:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:56:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-23 18:56:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 18:56:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 18:56:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 18:56:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 18:56:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 18:56:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 18:56:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 18:56:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 18:56:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 18:56:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 18:56:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 18:56:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:56:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 18:56:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-23 18:56:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 18:56:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-23 18:56:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-23 18:56:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-23 18:56:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-23 18:56:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 18:56:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-23 18:56:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-23 18:56:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-23 18:56:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 18:56:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 18:56:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 18:56:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 18:56:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-23 18:56:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-23 18:56:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-23 18:56:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-23 18:56:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-23 18:56:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-23 18:56:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-23 18:56:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-23 18:56:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-23 18:56:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-23 18:56:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-23 18:56:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-23 18:56:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-10-23 18:56:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-23 18:56:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-10-23 18:56:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-23 18:56:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-23 18:56:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-23 18:56:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-10-23 18:56:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-23 18:56:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:56:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4756 proven. 2496 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-10-23 18:56:35,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747839588] [2020-10-23 18:56:35,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089330245] [2020-10-23 18:56:35,608 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 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:56:35,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2020-10-23 18:56:35,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:56:35,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 101 conjunts are in the unsatisfiable core [2020-10-23 18:56:35,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:56:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4900 proven. 2352 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-10-23 18:56:52,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:56:52,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 153 [2020-10-23 18:56:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240704155] [2020-10-23 18:56:52,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 153 states [2020-10-23 18:56:52,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:56:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2020-10-23 18:56:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5155, Invalid=18101, Unknown=0, NotChecked=0, Total=23256 [2020-10-23 18:56:52,167 INFO L87 Difference]: Start difference. First operand 419 states and 445 transitions. Second operand 153 states.