/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:22,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:22,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:22,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:22,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:22,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:22,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:22,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:22,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:22,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:22,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:22,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:22,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:22,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:22,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:22,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:22,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:22,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:22,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:22,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:22,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:22,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:22,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:22,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:22,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:22,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:22,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:22,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:22,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:22,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:22,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:22,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:22,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:22,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:22,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:22,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:22,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:22,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:22,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:22,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:22,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:22,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:19:22,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:22,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:22,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:22,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:22,488 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:22,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:22,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:22,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:22,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:22,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:22,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:22,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:22,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:22,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:22,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:22,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:22,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:22,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:22,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:22,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:22,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:22,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:22,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:22,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:22,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:22,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:22,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:22,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:22,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:22,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:22,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:23,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:23,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:23,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:23,010 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:23,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-21 11:19:23,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bce86d1d/16ce968bb4064379b53206f1e62b1dca/FLAG867568bb2 [2020-09-21 11:19:23,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:23,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-21 11:19:23,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bce86d1d/16ce968bb4064379b53206f1e62b1dca/FLAG867568bb2 [2020-09-21 11:19:23,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bce86d1d/16ce968bb4064379b53206f1e62b1dca [2020-09-21 11:19:23,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:24,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:24,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:24,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:24,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:24,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:23" (1/1) ... [2020-09-21 11:19:24,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24, skipping insertion in model container [2020-09-21 11:19:24,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:23" (1/1) ... [2020-09-21 11:19:24,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:24,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:24,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:24,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:24,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:24,317 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:24,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24 WrapperNode [2020-09-21 11:19:24,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:24,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:24,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:24,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:24,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... [2020-09-21 11:19:24,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:24,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:24,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:24,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:24,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 11:19:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-21 11:19:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:19:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-21 11:19:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:24,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:24,748 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:19:24,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:24 BoogieIcfgContainer [2020-09-21 11:19:24,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:24,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:24,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:24,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:24,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:23" (1/3) ... [2020-09-21 11:19:24,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60184532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:24, skipping insertion in model container [2020-09-21 11:19:24,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:24" (2/3) ... [2020-09-21 11:19:24,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60184532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:24, skipping insertion in model container [2020-09-21 11:19:24,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:24" (3/3) ... [2020-09-21 11:19:24,764 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-21 11:19:24,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:24,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:24,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:24,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:24,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:24,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:24,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:24,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:24,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:24,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:24,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-21 11:19:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:19:24,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:24,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:24,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-09-21 11:19:24,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:24,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802811821] [2020-09-21 11:19:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,116 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:25,116 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:25,116 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:19:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 11:19:25,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,195 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:25,195 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:25,195 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:25,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:25,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:25,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:25,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:25,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:25,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:25,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:25,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:19:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:25,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802811821] [2020-09-21 11:19:25,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:25,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:19:25,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671677252] [2020-09-21 11:19:25,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:19:25,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:19:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:25,335 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-09-21 11:19:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:25,539 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-09-21 11:19:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:19:25,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-21 11:19:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:25,556 INFO L225 Difference]: With dead ends: 39 [2020-09-21 11:19:25,556 INFO L226 Difference]: Without dead ends: 25 [2020-09-21 11:19:25,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:19:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-21 11:19:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-21 11:19:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 11:19:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-09-21 11:19:25,616 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 15 [2020-09-21 11:19:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:25,616 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-09-21 11:19:25,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:19:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-09-21 11:19:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:19:25,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:25,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:25,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:25,621 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:25,621 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-09-21 11:19:25,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:25,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145628067] [2020-09-21 11:19:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,694 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:25,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:25,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:25,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:19:25,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 11:19:25,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:19:25,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:19:25,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:19:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:25,742 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:25,742 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:25,743 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:25,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:25,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:19:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,788 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:25,788 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:25,788 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:25,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:25,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:19:25,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:19:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:25,838 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:25,839 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:25,839 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:25,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:19:25,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145628067] [2020-09-21 11:19:25,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:19:25,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905865369] [2020-09-21 11:19:25,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:19:25,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:19:25,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:19:25,906 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 8 states. [2020-09-21 11:19:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:26,109 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-09-21 11:19:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:19:26,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-09-21 11:19:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:26,111 INFO L225 Difference]: With dead ends: 32 [2020-09-21 11:19:26,112 INFO L226 Difference]: Without dead ends: 28 [2020-09-21 11:19:26,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:19:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-21 11:19:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-09-21 11:19:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 11:19:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-09-21 11:19:26,123 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 22 [2020-09-21 11:19:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:26,124 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-09-21 11:19:26,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:19:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-09-21 11:19:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:19:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:26,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:26,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:26,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash 408363011, now seen corresponding path program 1 times [2020-09-21 11:19:26,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:26,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973614590] [2020-09-21 11:19:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,152 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,153 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:19:26,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:19:26,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:19:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,171 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:26,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:26,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,197 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,197 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:19:26,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:19:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:19:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:26,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:19:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:19:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:26,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:26,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:19:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:19:26,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973614590] [2020-09-21 11:19:26,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:26,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:19:26,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457001701] [2020-09-21 11:19:26,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:26,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:26,306 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-09-21 11:19:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:26,383 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2020-09-21 11:19:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:26,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-21 11:19:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:26,386 INFO L225 Difference]: With dead ends: 46 [2020-09-21 11:19:26,386 INFO L226 Difference]: Without dead ends: 28 [2020-09-21 11:19:26,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:19:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-21 11:19:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-21 11:19:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-21 11:19:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-09-21 11:19:26,397 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 28 [2020-09-21 11:19:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:26,397 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-09-21 11:19:26,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-09-21 11:19:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 11:19:26,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:26,400 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-09-21 11:19:26,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:19:26,400 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:26,401 INFO L82 PathProgramCache]: Analyzing trace with hash 718507263, now seen corresponding path program 1 times [2020-09-21 11:19:26,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:26,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285657356] [2020-09-21 11:19:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,534 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,535 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,535 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 11:19:26,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-21 11:19:26,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:19:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 11:19:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,587 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,587 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,588 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,588 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:26,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,643 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,644 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:19:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 11:19:26,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 11:19:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,700 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,701 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,701 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:19:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:26,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:26,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:19:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,791 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,792 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:19:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-21 11:19:26,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285657356] [2020-09-21 11:19:26,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:26,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:19:26,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935177310] [2020-09-21 11:19:26,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:19:26,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:26,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:19:26,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:19:26,819 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 12 states. [2020-09-21 11:19:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:27,164 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2020-09-21 11:19:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:19:27,165 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-09-21 11:19:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:27,168 INFO L225 Difference]: With dead ends: 42 [2020-09-21 11:19:27,168 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 11:19:27,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:19:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 11:19:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-21 11:19:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:19:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2020-09-21 11:19:27,183 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2020-09-21 11:19:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:27,184 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2020-09-21 11:19:27,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:19:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2020-09-21 11:19:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:27,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:27,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:27,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:19:27,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1711672813, now seen corresponding path program 2 times [2020-09-21 11:19:27,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:27,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550501466] [2020-09-21 11:19:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,302 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,303 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,303 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 11:19:27,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 11:19:27,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 11:19:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 11:19:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:19:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,337 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:27,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,403 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,404 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:19:27,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:19:27,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:19:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-21 11:19:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:27,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:19:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:19:27,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 11:19:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:27,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:27,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:19:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,581 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,582 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,582 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,582 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:27,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:19:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,626 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,626 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,626 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,626 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:27,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-21 11:19:27,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550501466] [2020-09-21 11:19:27,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:27,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:19:27,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285435082] [2020-09-21 11:19:27,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:19:27,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:19:27,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:19:27,640 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand 12 states. [2020-09-21 11:19:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:27,926 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2020-09-21 11:19:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:19:27,927 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-09-21 11:19:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:27,929 INFO L225 Difference]: With dead ends: 49 [2020-09-21 11:19:27,929 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 11:19:27,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-09-21 11:19:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 11:19:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-09-21 11:19:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 11:19:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-09-21 11:19:27,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 42 [2020-09-21 11:19:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:27,942 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-09-21 11:19:27,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:19:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-09-21 11:19:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:27,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:27,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:27,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:19:27,945 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:27,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:27,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1051926487, now seen corresponding path program 3 times [2020-09-21 11:19:27,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:27,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773652139] [2020-09-21 11:19:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,976 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,977 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 11:19:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:19:27,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:19:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:19:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,993 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,993 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,993 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:27,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,038 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,039 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,039 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,072 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:28,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:19:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:19:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,113 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,113 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:19:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,143 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,143 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,144 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:28,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:19:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,177 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,177 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:19:28,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773652139] [2020-09-21 11:19:28,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:28,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:19:28,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757830008] [2020-09-21 11:19:28,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:19:28,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:28,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:19:28,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:19:28,198 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 10 states. [2020-09-21 11:19:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:28,405 INFO L93 Difference]: Finished difference Result 82 states and 155 transitions. [2020-09-21 11:19:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:19:28,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-09-21 11:19:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:28,409 INFO L225 Difference]: With dead ends: 82 [2020-09-21 11:19:28,409 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 11:19:28,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:19:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 11:19:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 11:19:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:19:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 96 transitions. [2020-09-21 11:19:28,425 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 96 transitions. Word has length 42 [2020-09-21 11:19:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:28,425 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 96 transitions. [2020-09-21 11:19:28,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:19:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 96 transitions. [2020-09-21 11:19:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-21 11:19:28,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:28,428 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:28,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:19:28,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:28,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1391486109, now seen corresponding path program 4 times [2020-09-21 11:19:28,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:28,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119552043] [2020-09-21 11:19:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,441 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,441 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-21 11:19:28,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:19:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:19:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:19:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,454 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,454 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,454 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:28,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,466 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,466 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 11:19:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:19:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:19:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:19:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,481 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,482 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,482 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:19:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,495 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,495 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,496 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:19:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:19:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:28,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:19:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,524 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,524 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,524 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:28,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:19:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,532 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,532 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,532 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-21 11:19:28,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119552043] [2020-09-21 11:19:28,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:28,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 11:19:28,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474151370] [2020-09-21 11:19:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:19:28,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:19:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:19:28,543 INFO L87 Difference]: Start difference. First operand 56 states and 96 transitions. Second operand 4 states. [2020-09-21 11:19:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:28,588 INFO L93 Difference]: Finished difference Result 100 states and 201 transitions. [2020-09-21 11:19:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:19:28,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-21 11:19:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:28,591 INFO L225 Difference]: With dead ends: 100 [2020-09-21 11:19:28,591 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 11:19:28,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 11:19:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-21 11:19:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 11:19:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 97 transitions. [2020-09-21 11:19:28,607 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 97 transitions. Word has length 49 [2020-09-21 11:19:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:28,608 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 97 transitions. [2020-09-21 11:19:28,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:19:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 97 transitions. [2020-09-21 11:19:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-21 11:19:28,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:28,611 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:28,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:19:28,611 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 5 times [2020-09-21 11:19:28,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:28,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091826717] [2020-09-21 11:19:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,689 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:19:28,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 11:19:28,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:19:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-21 11:19:28,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:19:28,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,713 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:28,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-21 11:19:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,823 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 11:19:28,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 11:19:28,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:19:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:19:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:19:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:28,925 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:28,925 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:28,926 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:28,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:28,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:19:28,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:28,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 11:19:28,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:28,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:19:28,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:28,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-21 11:19:28,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:28,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,033 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:19:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:19:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 11:19:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,076 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:19:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:19:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:19:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,144 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:29,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:29,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:19:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:29,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:29,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:19:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:29,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,210 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,210 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,210 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 44 proven. 37 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-21 11:19:29,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091826717] [2020-09-21 11:19:29,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:29,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 11:19:29,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902360328] [2020-09-21 11:19:29,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 11:19:29,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:29,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 11:19:29,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:19:29,228 INFO L87 Difference]: Start difference. First operand 57 states and 97 transitions. Second operand 13 states. [2020-09-21 11:19:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:29,518 INFO L93 Difference]: Finished difference Result 87 states and 159 transitions. [2020-09-21 11:19:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:19:29,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-09-21 11:19:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:29,520 INFO L225 Difference]: With dead ends: 87 [2020-09-21 11:19:29,520 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:19:29,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-09-21 11:19:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:19:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:19:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:19:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:19:29,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-09-21 11:19:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:29,523 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:19:29,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 11:19:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:19:29,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:19:29,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:19:29,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:19:29,947 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:19:29,947 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:19:29,947 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:19:29,947 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:19:29,948 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:19:29,948 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:19:29,948 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-21 11:19:29,948 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (or (not (<= 0 |ackermann_#in~m|)) (<= 1 |ackermann_#in~m|)) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-09-21 11:19:29,949 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-21 11:19:29,949 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-21 11:19:29,949 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (or (not (<= 0 |ackermann_#in~m|)) (<= 1 |ackermann_#in~m|)) (= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-09-21 11:19:29,950 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse0 (<= 1 |ackermann_#in~m|)) (.cse1 (= ackermann_~m |ackermann_#in~m|)) (.cse2 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= 2 |ackermann_#t~ret1|) (<= ackermann_~m 1) .cse0 .cse1 .cse2) (and (<= 3 |ackermann_#t~ret1|) .cse0 .cse1 .cse2))) [2020-09-21 11:19:29,950 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-21 11:19:29,950 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-21 11:19:29,950 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-21 11:19:29,950 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-21 11:19:29,950 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-21 11:19:29,951 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-21 11:19:29,951 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-21 11:19:29,951 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-21 11:19:29,951 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-21 11:19:29,951 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-21 11:19:29,952 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-21 11:19:29,952 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-21 11:19:29,952 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-21 11:19:29,952 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-21 11:19:29,953 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-21 11:19:29,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:29 BoogieIcfgContainer [2020-09-21 11:19:29,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:29,966 INFO L168 Benchmark]: Toolchain (without parser) took 5964.46 ms. Allocated memory was 141.0 MB in the beginning and 279.4 MB in the end (delta: 138.4 MB). Free memory was 103.1 MB in the beginning and 106.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 135.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:29,967 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:19:29,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.32 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:29,969 INFO L168 Benchmark]: Boogie Preprocessor took 127.64 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 183.3 MB in the end (delta: -90.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:29,970 INFO L168 Benchmark]: RCFGBuilder took 307.45 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 170.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:29,971 INFO L168 Benchmark]: TraceAbstraction took 5206.37 ms. Allocated memory was 204.5 MB in the beginning and 279.4 MB in the end (delta: 75.0 MB). Free memory was 169.5 MB in the beginning and 106.4 MB in the end (delta: 63.1 MB). Peak memory consumption was 138.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:29,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.32 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.64 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 183.3 MB in the end (delta: -90.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.45 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 170.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5206.37 ms. Allocated memory was 204.5 MB in the beginning and 279.4 MB in the end (delta: 75.0 MB). Free memory was 169.5 MB in the beginning and 106.4 MB in the end (delta: 63.1 MB). Peak memory consumption was 138.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 168 SDtfs, 129 SDslu, 640 SDs, 0 SdLazy, 835 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 113 PreInvPairs, 134 NumberOfFragments, 69 HoareAnnotationTreeSize, 113 FomulaSimplifications, 448 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 305 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 22115 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 242/335 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...