/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/eca-rers2012/Problem11_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:09:35,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:09:35,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:09:35,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:09:35,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:09:35,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:09:35,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:09:35,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:09:35,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:09:35,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:09:35,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:09:35,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:09:35,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:09:35,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:09:35,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:09:35,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:09:35,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:09:35,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:09:35,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:09:35,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:09:35,416 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 [2019-11-06 19:09:35,453 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:09:35,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:09:35,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:09:35,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:09:35,458 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:09:35,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:09:35,458 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:09:35,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:09:35,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:09:35,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:09:35,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:09:35,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:09:35,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:09:35,460 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:09:35,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:09:35,460 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:09:35,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:09:35,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:09:35,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:09:35,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:09:35,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:09:35,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:09:35,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:09:35,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:09:35,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:09:35,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:09:35,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:09:35,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:09:35,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:09:35,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:09:35,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:09:35,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:09:35,816 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:09:35,816 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:09:35,817 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2019-11-06 19:09:35,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85db040e/20153244ab654e1ea0e4d40c156b4d2d/FLAGfa709684f [2019-11-06 19:09:36,493 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:09:36,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2019-11-06 19:09:36,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85db040e/20153244ab654e1ea0e4d40c156b4d2d/FLAGfa709684f [2019-11-06 19:09:36,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85db040e/20153244ab654e1ea0e4d40c156b4d2d [2019-11-06 19:09:36,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:09:36,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:09:36,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:09:36,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:09:36,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:09:36,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:09:36" (1/1) ... [2019-11-06 19:09:36,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687f093b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:36, skipping insertion in model container [2019-11-06 19:09:36,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:09:36" (1/1) ... [2019-11-06 19:09:36,747 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:09:36,818 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:09:37,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:09:37,560 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:09:37,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:09:37,798 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:09:37,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37 WrapperNode [2019-11-06 19:09:37,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:09:37,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:09:37,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:09:37,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:09:37,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (1/1) ... [2019-11-06 19:09:37,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:09:37,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:09:37,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:09:37,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:09:37,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (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 [2019-11-06 19:09:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:09:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:09:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:09:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:09:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:09:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:09:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:09:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:09:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:09:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:09:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:09:39,725 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:09:39,725 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:09:39,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:09:39 BoogieIcfgContainer [2019-11-06 19:09:39,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:09:39,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:09:39,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:09:39,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:09:39,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:09:36" (1/3) ... [2019-11-06 19:09:39,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bac9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:09:39, skipping insertion in model container [2019-11-06 19:09:39,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:37" (2/3) ... [2019-11-06 19:09:39,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bac9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:09:39, skipping insertion in model container [2019-11-06 19:09:39,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:09:39" (3/3) ... [2019-11-06 19:09:39,737 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label37.c [2019-11-06 19:09:39,748 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:09:39,757 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:09:39,769 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:09:39,807 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:09:39,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:09:39,808 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:09:39,808 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:09:39,808 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:09:39,808 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:09:39,809 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:09:39,809 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:09:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-11-06 19:09:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 19:09:39,852 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:39,854 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:39,856 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:39,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1618793274, now seen corresponding path program 1 times [2019-11-06 19:09:39,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:39,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145288043] [2019-11-06 19:09:39,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:40,408 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145288043] [2019-11-06 19:09:40,409 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:09:40,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:09:40,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183191645] [2019-11-06 19:09:40,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:09:40,416 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:40,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:09:40,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:09:40,433 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-11-06 19:09:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:43,932 INFO L93 Difference]: Finished difference Result 1006 states and 1797 transitions. [2019-11-06 19:09:43,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:09:43,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-11-06 19:09:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:43,956 INFO L225 Difference]: With dead ends: 1006 [2019-11-06 19:09:43,956 INFO L226 Difference]: Without dead ends: 630 [2019-11-06 19:09:43,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-11-06 19:09:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 620. [2019-11-06 19:09:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-11-06 19:09:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 915 transitions. [2019-11-06 19:09:44,070 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 915 transitions. Word has length 55 [2019-11-06 19:09:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:44,071 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 915 transitions. [2019-11-06 19:09:44,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:09:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 915 transitions. [2019-11-06 19:09:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 19:09:44,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:44,086 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:44,086 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2133526889, now seen corresponding path program 1 times [2019-11-06 19:09:44,087 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:44,087 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228512144] [2019-11-06 19:09:44,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:44,396 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228512144] [2019-11-06 19:09:44,397 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822199220] [2019-11-06 19:09:44,397 INFO L94 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 [2019-11-06 19:09:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:44,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:44,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:44,595 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:44,596 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:09:44,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715810869] [2019-11-06 19:09:44,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:44,598 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:44,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:44,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:44,599 INFO L87 Difference]: Start difference. First operand 620 states and 915 transitions. Second operand 3 states. [2019-11-06 19:09:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:45,739 INFO L93 Difference]: Finished difference Result 1816 states and 2718 transitions. [2019-11-06 19:09:45,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:45,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-11-06 19:09:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:45,749 INFO L225 Difference]: With dead ends: 1816 [2019-11-06 19:09:45,750 INFO L226 Difference]: Without dead ends: 1202 [2019-11-06 19:09:45,752 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:45,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2019-11-06 19:09:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1194. [2019-11-06 19:09:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2019-11-06 19:09:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1631 transitions. [2019-11-06 19:09:45,813 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1631 transitions. Word has length 128 [2019-11-06 19:09:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:45,814 INFO L462 AbstractCegarLoop]: Abstraction has 1194 states and 1631 transitions. [2019-11-06 19:09:45,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1631 transitions. [2019-11-06 19:09:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-06 19:09:45,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:45,819 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:46,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:46,028 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:46,029 INFO L82 PathProgramCache]: Analyzing trace with hash 778986062, now seen corresponding path program 1 times [2019-11-06 19:09:46,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:46,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308191331] [2019-11-06 19:09:46,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:46,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308191331] [2019-11-06 19:09:46,370 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:09:46,370 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 19:09:46,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303106070] [2019-11-06 19:09:46,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 19:09:46,371 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:46,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 19:09:46,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:46,372 INFO L87 Difference]: Start difference. First operand 1194 states and 1631 transitions. Second operand 7 states. [2019-11-06 19:09:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:49,169 INFO L93 Difference]: Finished difference Result 3415 states and 4910 transitions. [2019-11-06 19:09:49,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 19:09:49,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2019-11-06 19:09:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:49,186 INFO L225 Difference]: With dead ends: 3415 [2019-11-06 19:09:49,186 INFO L226 Difference]: Without dead ends: 2227 [2019-11-06 19:09:49,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:09:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2019-11-06 19:09:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2196. [2019-11-06 19:09:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2019-11-06 19:09:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2885 transitions. [2019-11-06 19:09:49,270 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2885 transitions. Word has length 153 [2019-11-06 19:09:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:49,271 INFO L462 AbstractCegarLoop]: Abstraction has 2196 states and 2885 transitions. [2019-11-06 19:09:49,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 19:09:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2885 transitions. [2019-11-06 19:09:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-06 19:09:49,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:49,277 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:49,278 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:49,278 INFO L82 PathProgramCache]: Analyzing trace with hash 697486710, now seen corresponding path program 1 times [2019-11-06 19:09:49,278 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:49,278 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680244165] [2019-11-06 19:09:49,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:09:49,590 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680244165] [2019-11-06 19:09:49,590 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483169065] [2019-11-06 19:09:49,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:49,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:49,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:09:49,753 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:49,753 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:09:49,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284917885] [2019-11-06 19:09:49,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:49,755 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:49,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:49,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:49,755 INFO L87 Difference]: Start difference. First operand 2196 states and 2885 transitions. Second operand 3 states. [2019-11-06 19:09:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:50,856 INFO L93 Difference]: Finished difference Result 5557 states and 7539 transitions. [2019-11-06 19:09:50,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:50,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2019-11-06 19:09:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:50,875 INFO L225 Difference]: With dead ends: 5557 [2019-11-06 19:09:50,876 INFO L226 Difference]: Without dead ends: 3367 [2019-11-06 19:09:50,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2019-11-06 19:09:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3351. [2019-11-06 19:09:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2019-11-06 19:09:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4511 transitions. [2019-11-06 19:09:50,979 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4511 transitions. Word has length 213 [2019-11-06 19:09:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:50,980 INFO L462 AbstractCegarLoop]: Abstraction has 3351 states and 4511 transitions. [2019-11-06 19:09:50,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4511 transitions. [2019-11-06 19:09:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-06 19:09:50,987 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:50,987 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:51,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:51,192 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:51,193 INFO L82 PathProgramCache]: Analyzing trace with hash 158032221, now seen corresponding path program 1 times [2019-11-06 19:09:51,193 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:51,193 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025866034] [2019-11-06 19:09:51,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:09:51,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025866034] [2019-11-06 19:09:51,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236936051] [2019-11-06 19:09:51,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-06 19:09:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:51,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:51,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:09:51,830 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:51,830 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:09:51,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650979545] [2019-11-06 19:09:51,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:51,831 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:51,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:51,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:51,832 INFO L87 Difference]: Start difference. First operand 3351 states and 4511 transitions. Second operand 3 states. [2019-11-06 19:09:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:52,876 INFO L93 Difference]: Finished difference Result 7660 states and 10549 transitions. [2019-11-06 19:09:52,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:52,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2019-11-06 19:09:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:52,903 INFO L225 Difference]: With dead ends: 7660 [2019-11-06 19:09:52,903 INFO L226 Difference]: Without dead ends: 4315 [2019-11-06 19:09:52,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2019-11-06 19:09:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4308. [2019-11-06 19:09:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4308 states. [2019-11-06 19:09:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5732 transitions. [2019-11-06 19:09:53,014 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5732 transitions. Word has length 230 [2019-11-06 19:09:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:53,015 INFO L462 AbstractCegarLoop]: Abstraction has 4308 states and 5732 transitions. [2019-11-06 19:09:53,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5732 transitions. [2019-11-06 19:09:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-11-06 19:09:53,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:53,027 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:53,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:53,231 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash -705099007, now seen corresponding path program 1 times [2019-11-06 19:09:53,232 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:53,232 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263187894] [2019-11-06 19:09:53,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 5 proven. 163 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:09:54,295 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263187894] [2019-11-06 19:09:54,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253876028] [2019-11-06 19:09:54,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-06 19:09:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:54,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 19:09:54,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:54,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-11-06 19:09:54,796 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:54,796 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2019-11-06 19:09:54,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052902460] [2019-11-06 19:09:54,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:09:54,798 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:54,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:09:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:09:54,798 INFO L87 Difference]: Start difference. First operand 4308 states and 5732 transitions. Second operand 5 states. [2019-11-06 19:09:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:56,379 INFO L93 Difference]: Finished difference Result 8673 states and 11648 transitions. [2019-11-06 19:09:56,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 19:09:56,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2019-11-06 19:09:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:56,400 INFO L225 Difference]: With dead ends: 8673 [2019-11-06 19:09:56,401 INFO L226 Difference]: Without dead ends: 4371 [2019-11-06 19:09:56,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2019-11-06 19:09:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2019-11-06 19:09:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 4350. [2019-11-06 19:09:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2019-11-06 19:09:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 5788 transitions. [2019-11-06 19:09:56,520 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 5788 transitions. Word has length 294 [2019-11-06 19:09:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:56,521 INFO L462 AbstractCegarLoop]: Abstraction has 4350 states and 5788 transitions. [2019-11-06 19:09:56,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:09:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 5788 transitions. [2019-11-06 19:09:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2019-11-06 19:09:56,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:56,539 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:56,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:56,743 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:56,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1581254081, now seen corresponding path program 1 times [2019-11-06 19:09:56,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:56,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346617572] [2019-11-06 19:09:56,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 190 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:09:57,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346617572] [2019-11-06 19:09:57,449 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989953135] [2019-11-06 19:09:57,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:57,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-06 19:09:57,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:57,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:09:57,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:09:58,562 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_506 Int)) (let ((.cse1 (+ v_~a29~0_506 69157))) (let ((.cse0 (mod .cse1 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ .cse0 277)) (not (= .cse0 0)) (< .cse1 0))))) (exists ((v_~a29~0_506 Int)) (let ((.cse2 (+ v_~a29~0_506 69157))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ (mod .cse2 299861) 300138)) (<= 0 .cse2)))) (exists ((v_~a29~0_506 Int)) (let ((.cse3 (mod (+ v_~a29~0_506 69157) 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ .cse3 300138)) (= .cse3 0))))) is different from true [2019-11-06 19:10:04,670 WARN L191 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 37 DAG size of output: 15 [2019-11-06 19:10:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 4 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-11-06 19:10:04,916 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:10:04,916 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2019-11-06 19:10:04,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454477198] [2019-11-06 19:10:04,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-06 19:10:04,918 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-06 19:10:04,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=167, Unknown=3, NotChecked=26, Total=240 [2019-11-06 19:10:04,919 INFO L87 Difference]: Start difference. First operand 4350 states and 5788 transitions. Second operand 16 states. [2019-11-06 19:10:15,530 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 24