/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:57:20,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:57:20,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:57:20,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:57:20,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:57:20,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:57:20,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:57:20,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:57:20,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:57:20,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:57:20,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:57:20,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:57:20,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:57:20,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:57:20,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:57:20,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:57:20,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:57:20,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:57:20,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:57:20,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:57:20,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:57:20,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:57:20,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:57:20,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:57:20,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:57:20,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:57:20,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:57:20,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:57:20,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:57:20,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:57:20,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:57:20,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:57:20,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:57:20,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:57:20,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:57:20,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:57:20,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:57:20,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:57:20,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:57:20,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:57:20,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:57:20,573 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 [2020-10-13 13:57:20,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:57:20,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:57:20,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:57:20,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:57:20,611 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:57:20,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:57:20,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:57:20,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:57:20,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:57:20,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:57:20,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:57:20,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:57:20,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:57:20,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:57:20,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:57:20,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:57:20,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:57:20,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:57:20,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:57:20,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:57:20,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:57:20,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:57:20,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:57:20,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:57:20,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:57:20,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:57:20,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:57:20,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:57:20,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:57:20,617 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:57:20,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:57:20,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:57:20,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:57:20,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:57:20,955 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:57:20,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 13:57:21,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3fe6cf2c/221b7037fd5d447c8f83090a28d7ec3f/FLAGeada16090 [2020-10-13 13:57:21,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:57:21,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 13:57:21,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3fe6cf2c/221b7037fd5d447c8f83090a28d7ec3f/FLAGeada16090 [2020-10-13 13:57:21,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3fe6cf2c/221b7037fd5d447c8f83090a28d7ec3f [2020-10-13 13:57:21,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:57:21,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:57:21,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:57:21,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:57:21,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:57:21,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:57:21" (1/1) ... [2020-10-13 13:57:21,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248aaf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:21, skipping insertion in model container [2020-10-13 13:57:21,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:57:21" (1/1) ... [2020-10-13 13:57:21,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:57:21,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:57:22,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:57:22,498 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:57:22,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:57:22,672 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:57:22,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22 WrapperNode [2020-10-13 13:57:22,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:57:22,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:57:22,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:57:22,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:57:22,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (1/1) ... [2020-10-13 13:57:22,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:57:22,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:57:22,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:57:22,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:57:22,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (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 [2020-10-13 13:57:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:57:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:57:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:57:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:57:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:57:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:57:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:57:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:57:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:57:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:57:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:57:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:57:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:57:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:57:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:57:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:57:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:57:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:57:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:57:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:57:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:57:24,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:57:24,177 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:57:24,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:57:24 BoogieIcfgContainer [2020-10-13 13:57:24,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:57:24,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:57:24,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:57:24,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:57:24,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:57:21" (1/3) ... [2020-10-13 13:57:24,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771770ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:57:24, skipping insertion in model container [2020-10-13 13:57:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:22" (2/3) ... [2020-10-13 13:57:24,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771770ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:57:24, skipping insertion in model container [2020-10-13 13:57:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:57:24" (3/3) ... [2020-10-13 13:57:24,193 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 13:57:24,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:57:24,213 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:57:24,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:57:24,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:57:24,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:57:24,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:57:24,256 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:57:24,256 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:57:24,256 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:57:24,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:57:24,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:57:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-13 13:57:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 13:57:24,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:24,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:24,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-13 13:57:24,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:24,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609629646] [2020-10-13 13:57:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:29,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:29,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:57:29,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:57:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 13:57:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:57:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:57:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:57:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:57:30,879 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:57:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:30,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:30,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:57:30,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:57:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:30,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609629646] [2020-10-13 13:57:30,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:30,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:57:30,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506744772] [2020-10-13 13:57:30,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:57:30,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:57:31,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:31,003 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 7 states. [2020-10-13 13:57:31,585 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-13 13:57:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:34,248 INFO L93 Difference]: Finished difference Result 1372 states and 2345 transitions. [2020-10-13 13:57:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:57:34,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 13:57:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:34,274 INFO L225 Difference]: With dead ends: 1372 [2020-10-13 13:57:34,275 INFO L226 Difference]: Without dead ends: 1209 [2020-10-13 13:57:34,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:57:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-13 13:57:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 445. [2020-10-13 13:57:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-13 13:57:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 742 transitions. [2020-10-13 13:57:34,372 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 742 transitions. Word has length 115 [2020-10-13 13:57:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:34,373 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 742 transitions. [2020-10-13 13:57:34,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:57:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 742 transitions. [2020-10-13 13:57:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:57:34,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:34,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:34,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:57:34,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:34,385 INFO L82 PathProgramCache]: Analyzing trace with hash 238492466, now seen corresponding path program 1 times [2020-10-13 13:57:34,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:34,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73028407] [2020-10-13 13:57:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:35,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:57:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:57:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 13:57:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:57:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 13:57:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:57:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:57:40,017 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:57:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:40,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:57:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:40,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73028407] [2020-10-13 13:57:40,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:40,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:57:40,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620599400] [2020-10-13 13:57:40,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:57:40,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:40,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:57:40,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:57:40,111 INFO L87 Difference]: Start difference. First operand 445 states and 742 transitions. Second operand 8 states. [2020-10-13 13:57:40,529 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-13 13:57:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:43,389 INFO L93 Difference]: Finished difference Result 3103 states and 5237 transitions. [2020-10-13 13:57:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:57:43,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-13 13:57:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:43,407 INFO L225 Difference]: With dead ends: 3103 [2020-10-13 13:57:43,407 INFO L226 Difference]: Without dead ends: 2851 [2020-10-13 13:57:43,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:57:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2020-10-13 13:57:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1123. [2020-10-13 13:57:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-13 13:57:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1891 transitions. [2020-10-13 13:57:43,522 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1891 transitions. Word has length 116 [2020-10-13 13:57:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:43,522 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1891 transitions. [2020-10-13 13:57:43,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:57:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1891 transitions. [2020-10-13 13:57:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:57:43,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:43,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:43,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:57:43,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:43,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1258278418, now seen corresponding path program 1 times [2020-10-13 13:57:43,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:43,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024378417] [2020-10-13 13:57:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:44,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:48,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:48,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:57:48,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:57:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 13:57:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 13:57:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:57:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:49,156 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:57:49,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:49,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:57:49,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:49,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:49,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024378417] [2020-10-13 13:57:49,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:49,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:49,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946518906] [2020-10-13 13:57:49,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:49,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:49,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:49,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:49,245 INFO L87 Difference]: Start difference. First operand 1123 states and 1891 transitions. Second operand 5 states. [2020-10-13 13:57:49,804 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:57:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:51,742 INFO L93 Difference]: Finished difference Result 3680 states and 6225 transitions. [2020-10-13 13:57:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:51,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 13:57:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:51,763 INFO L225 Difference]: With dead ends: 3680 [2020-10-13 13:57:51,763 INFO L226 Difference]: Without dead ends: 2840 [2020-10-13 13:57:51,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-10-13 13:57:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1991. [2020-10-13 13:57:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-13 13:57:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 3360 transitions. [2020-10-13 13:57:51,936 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 3360 transitions. Word has length 117 [2020-10-13 13:57:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:51,939 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 3360 transitions. [2020-10-13 13:57:51,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 3360 transitions. [2020-10-13 13:57:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 13:57:51,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:51,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:51,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:57:51,944 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -408977543, now seen corresponding path program 1 times [2020-10-13 13:57:51,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:51,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589447202] [2020-10-13 13:57:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:57:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:57:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:57:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 13:57:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:57:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:57,474 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:57:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:57,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:57,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:57:57,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:57,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589447202] [2020-10-13 13:57:57,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:57,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:57,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103485592] [2020-10-13 13:57:57,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:57,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:57,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:57,562 INFO L87 Difference]: Start difference. First operand 1991 states and 3360 transitions. Second operand 5 states. [2020-10-13 13:57:57,921 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:57:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:59,957 INFO L93 Difference]: Finished difference Result 7024 states and 11879 transitions. [2020-10-13 13:57:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:59,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 13:57:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:59,986 INFO L225 Difference]: With dead ends: 7024 [2020-10-13 13:57:59,986 INFO L226 Difference]: Without dead ends: 5353 [2020-10-13 13:57:59,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2020-10-13 13:58:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3666. [2020-10-13 13:58:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-10-13 13:58:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6188 transitions. [2020-10-13 13:58:00,317 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6188 transitions. Word has length 118 [2020-10-13 13:58:00,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:00,318 INFO L479 AbstractCegarLoop]: Abstraction has 3666 states and 6188 transitions. [2020-10-13 13:58:00,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6188 transitions. [2020-10-13 13:58:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:58:00,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:00,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:00,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:58:00,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:00,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:00,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1170707965, now seen corresponding path program 1 times [2020-10-13 13:58:00,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:00,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696762645] [2020-10-13 13:58:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:00,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:00,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:05,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:58:05,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:58:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:58:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 13:58:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:58:05,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:05,785 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:05,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:58:05,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:05,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:05,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696762645] [2020-10-13 13:58:05,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:05,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:05,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472912800] [2020-10-13 13:58:05,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:05,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:05,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:05,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:05,841 INFO L87 Difference]: Start difference. First operand 3666 states and 6188 transitions. Second operand 4 states. [2020-10-13 13:58:06,224 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:58:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:08,388 INFO L93 Difference]: Finished difference Result 9622 states and 16254 transitions. [2020-10-13 13:58:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:08,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 13:58:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:08,421 INFO L225 Difference]: With dead ends: 9622 [2020-10-13 13:58:08,421 INFO L226 Difference]: Without dead ends: 6240 [2020-10-13 13:58:08,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-10-13 13:58:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 6238. [2020-10-13 13:58:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6238 states. [2020-10-13 13:58:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 10498 transitions. [2020-10-13 13:58:08,873 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 10498 transitions. Word has length 119 [2020-10-13 13:58:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:08,874 INFO L479 AbstractCegarLoop]: Abstraction has 6238 states and 10498 transitions. [2020-10-13 13:58:08,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 10498 transitions. [2020-10-13 13:58:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:58:08,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:08,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:08,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:58:08,878 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:08,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:08,878 INFO L82 PathProgramCache]: Analyzing trace with hash 154103829, now seen corresponding path program 1 times [2020-10-13 13:58:08,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:08,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213705778] [2020-10-13 13:58:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:13,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:13,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:58:13,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:58:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4770 [2020-10-13 13:58:13,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 13:58:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:58:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:14,040 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:14,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:14,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:14,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:58:14,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:14,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213705778] [2020-10-13 13:58:14,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:14,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:14,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615219082] [2020-10-13 13:58:14,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:14,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:14,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:14,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:14,096 INFO L87 Difference]: Start difference. First operand 6238 states and 10498 transitions. Second operand 5 states. [2020-10-13 13:58:14,504 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:58:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:16,803 INFO L93 Difference]: Finished difference Result 24046 states and 40501 transitions. [2020-10-13 13:58:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:58:16,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 13:58:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:16,869 INFO L225 Difference]: With dead ends: 24046 [2020-10-13 13:58:16,869 INFO L226 Difference]: Without dead ends: 18110 [2020-10-13 13:58:16,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:16,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18110 states. [2020-10-13 13:58:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18110 to 12116. [2020-10-13 13:58:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12116 states. [2020-10-13 13:58:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12116 states to 12116 states and 20354 transitions. [2020-10-13 13:58:17,852 INFO L78 Accepts]: Start accepts. Automaton has 12116 states and 20354 transitions. Word has length 119 [2020-10-13 13:58:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:17,853 INFO L479 AbstractCegarLoop]: Abstraction has 12116 states and 20354 transitions. [2020-10-13 13:58:17,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 12116 states and 20354 transitions. [2020-10-13 13:58:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:58:17,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:17,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:17,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:58:17,856 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:17,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507399, now seen corresponding path program 1 times [2020-10-13 13:58:17,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:17,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392271048] [2020-10-13 13:58:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:58:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:58:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:58:22,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 13:58:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:58:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:23,262 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:23,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392271048] [2020-10-13 13:58:23,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:23,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:23,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131164203] [2020-10-13 13:58:23,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:23,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:23,305 INFO L87 Difference]: Start difference. First operand 12116 states and 20354 transitions. Second operand 4 states. [2020-10-13 13:58:23,749 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:58:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:26,071 INFO L93 Difference]: Finished difference Result 32888 states and 55252 transitions. [2020-10-13 13:58:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:26,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 13:58:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:26,127 INFO L225 Difference]: With dead ends: 32888 [2020-10-13 13:58:26,127 INFO L226 Difference]: Without dead ends: 21058 [2020-10-13 13:58:26,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21058 states. [2020-10-13 13:58:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21058 to 20999. [2020-10-13 13:58:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20999 states. [2020-10-13 13:58:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 35161 transitions. [2020-10-13 13:58:27,371 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 35161 transitions. Word has length 119 [2020-10-13 13:58:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:27,372 INFO L479 AbstractCegarLoop]: Abstraction has 20999 states and 35161 transitions. [2020-10-13 13:58:27,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 35161 transitions. [2020-10-13 13:58:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:58:27,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:27,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:27,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:58:27,375 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:27,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:27,375 INFO L82 PathProgramCache]: Analyzing trace with hash -916770661, now seen corresponding path program 1 times [2020-10-13 13:58:27,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:27,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167310036] [2020-10-13 13:58:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:58:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:58:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:58:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 13:58:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:58:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:32,792 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:32,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167310036] [2020-10-13 13:58:32,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:32,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:32,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701974581] [2020-10-13 13:58:32,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:32,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:32,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:32,844 INFO L87 Difference]: Start difference. First operand 20999 states and 35161 transitions. Second operand 4 states. [2020-10-13 13:58:33,232 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:58:36,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:36,722 INFO L93 Difference]: Finished difference Result 56827 states and 95099 transitions. [2020-10-13 13:58:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:36,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 13:58:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:36,822 INFO L225 Difference]: With dead ends: 56827 [2020-10-13 13:58:36,822 INFO L226 Difference]: Without dead ends: 36049 [2020-10-13 13:58:36,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36049 states. [2020-10-13 13:58:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36049 to 36019. [2020-10-13 13:58:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36019 states. [2020-10-13 13:58:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36019 states to 36019 states and 60026 transitions. [2020-10-13 13:58:38,815 INFO L78 Accepts]: Start accepts. Automaton has 36019 states and 60026 transitions. Word has length 119 [2020-10-13 13:58:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:38,816 INFO L479 AbstractCegarLoop]: Abstraction has 36019 states and 60026 transitions. [2020-10-13 13:58:38,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 36019 states and 60026 transitions. [2020-10-13 13:58:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:58:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:38,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:38,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:58:38,818 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1305514857, now seen corresponding path program 1 times [2020-10-13 13:58:38,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:38,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322217378] [2020-10-13 13:58:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:43,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:43,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:58:43,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:58:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 13:58:43,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 13:58:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:58:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:44,229 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:44,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:44,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:44,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:58:44,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:44,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:44,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322217378] [2020-10-13 13:58:44,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:44,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:44,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439402387] [2020-10-13 13:58:44,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:44,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:44,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:44,261 INFO L87 Difference]: Start difference. First operand 36019 states and 60026 transitions. Second operand 4 states. [2020-10-13 13:58:44,629 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:58:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:49,464 INFO L93 Difference]: Finished difference Result 96215 states and 160124 transitions. [2020-10-13 13:58:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:49,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 13:58:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:49,576 INFO L225 Difference]: With dead ends: 96215 [2020-10-13 13:58:49,576 INFO L226 Difference]: Without dead ends: 60389 [2020-10-13 13:58:49,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60389 states. [2020-10-13 13:58:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60389 to 60387. [2020-10-13 13:58:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60387 states. [2020-10-13 13:58:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60387 states to 60387 states and 99962 transitions. [2020-10-13 13:58:53,069 INFO L78 Accepts]: Start accepts. Automaton has 60387 states and 99962 transitions. Word has length 119 [2020-10-13 13:58:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:53,070 INFO L479 AbstractCegarLoop]: Abstraction has 60387 states and 99962 transitions. [2020-10-13 13:58:53,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 60387 states and 99962 transitions. [2020-10-13 13:58:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 13:58:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:53,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:53,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:58:53,072 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash 575262117, now seen corresponding path program 1 times [2020-10-13 13:58:53,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:53,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123633280] [2020-10-13 13:58:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:56,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 13:58:56,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:58:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3493 [2020-10-13 13:58:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 13:58:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:58:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:56,982 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:57,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:57,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:57,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:58:57,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:57,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123633280] [2020-10-13 13:58:57,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:57,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:57,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471342633] [2020-10-13 13:58:57,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:57,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:57,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:57,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:57,027 INFO L87 Difference]: Start difference. First operand 60387 states and 99962 transitions. Second operand 4 states. [2020-10-13 13:59:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:03,677 INFO L93 Difference]: Finished difference Result 144951 states and 238908 transitions. [2020-10-13 13:59:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:59:03,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-13 13:59:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:03,796 INFO L225 Difference]: With dead ends: 144951 [2020-10-13 13:59:03,796 INFO L226 Difference]: Without dead ends: 84757 [2020-10-13 13:59:03,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84757 states. [2020-10-13 13:59:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84757 to 84755. [2020-10-13 13:59:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84755 states. [2020-10-13 13:59:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84755 states to 84755 states and 137530 transitions. [2020-10-13 13:59:08,120 INFO L78 Accepts]: Start accepts. Automaton has 84755 states and 137530 transitions. Word has length 121 [2020-10-13 13:59:08,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:08,120 INFO L479 AbstractCegarLoop]: Abstraction has 84755 states and 137530 transitions. [2020-10-13 13:59:08,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 84755 states and 137530 transitions. [2020-10-13 13:59:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 13:59:08,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:08,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:59:08,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:59:08,122 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash -588077429, now seen corresponding path program 1 times [2020-10-13 13:59:08,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:08,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933702109] [2020-10-13 13:59:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:08,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:09,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:09,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:09,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 13:59:09,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:59:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-10-13 13:59:09,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 13:59:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:59:09,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:10,121 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:10,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:59:10,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:10,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933702109] [2020-10-13 13:59:10,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:10,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:10,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127421229] [2020-10-13 13:59:10,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:10,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:10,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:10,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:10,175 INFO L87 Difference]: Start difference. First operand 84755 states and 137530 transitions. Second operand 4 states. [2020-10-13 13:59:10,513 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 13:59:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:18,136 INFO L93 Difference]: Finished difference Result 186117 states and 302226 transitions. [2020-10-13 13:59:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:18,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-13 13:59:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:18,281 INFO L225 Difference]: With dead ends: 186117 [2020-10-13 13:59:18,282 INFO L226 Difference]: Without dead ends: 101555 [2020-10-13 13:59:18,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101555 states. [2020-10-13 13:59:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101555 to 101553. [2020-10-13 13:59:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101553 states. [2020-10-13 13:59:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101553 states to 101553 states and 164184 transitions. [2020-10-13 13:59:25,502 INFO L78 Accepts]: Start accepts. Automaton has 101553 states and 164184 transitions. Word has length 122 [2020-10-13 13:59:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:25,503 INFO L479 AbstractCegarLoop]: Abstraction has 101553 states and 164184 transitions. [2020-10-13 13:59:25,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 101553 states and 164184 transitions. [2020-10-13 13:59:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 13:59:25,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:25,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:59:25,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:59:25,504 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:25,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1122051790, now seen corresponding path program 1 times [2020-10-13 13:59:25,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:25,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549417504] [2020-10-13 13:59:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:30,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:59:30,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:59:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:59:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:59:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:59:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:59:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:30,977 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:31,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:31,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:31,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:59:31,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:31,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549417504] [2020-10-13 13:59:31,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:31,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:59:31,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653789022] [2020-10-13 13:59:31,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:59:31,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:31,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:59:31,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:59:31,037 INFO L87 Difference]: Start difference. First operand 101553 states and 164184 transitions. Second operand 7 states. [2020-10-13 13:59:31,503 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 13:59:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:49,538 INFO L93 Difference]: Finished difference Result 346065 states and 560128 transitions. [2020-10-13 13:59:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:59:49,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-13 13:59:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:49,917 INFO L225 Difference]: With dead ends: 346065 [2020-10-13 13:59:49,917 INFO L226 Difference]: Without dead ends: 244707 [2020-10-13 13:59:50,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:59:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244707 states. [2020-10-13 13:59:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244707 to 101553. [2020-10-13 13:59:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101553 states. [2020-10-13 13:59:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101553 states to 101553 states and 163808 transitions. [2020-10-13 13:59:56,936 INFO L78 Accepts]: Start accepts. Automaton has 101553 states and 163808 transitions. Word has length 124 [2020-10-13 13:59:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:56,936 INFO L479 AbstractCegarLoop]: Abstraction has 101553 states and 163808 transitions. [2020-10-13 13:59:56,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:59:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 101553 states and 163808 transitions. [2020-10-13 13:59:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 13:59:56,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:56,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:59:56,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:59:56,937 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1560061569, now seen corresponding path program 1 times [2020-10-13 13:59:56,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:56,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556964067] [2020-10-13 13:59:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:57,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:02,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 14:00:02,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:00:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5496 [2020-10-13 14:00:02,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:02,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 14:00:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:00:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:02,846 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:00:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:02,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:02,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:00:02,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:02,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556964067] [2020-10-13 14:00:02,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:02,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:02,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357070981] [2020-10-13 14:00:02,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:02,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:02,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:02,896 INFO L87 Difference]: Start difference. First operand 101553 states and 163808 transitions. Second operand 4 states. [2020-10-13 14:00:03,265 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 14:00:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:12,238 INFO L93 Difference]: Finished difference Result 229491 states and 369733 transitions. [2020-10-13 14:00:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:12,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 14:00:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:12,403 INFO L225 Difference]: With dead ends: 229491 [2020-10-13 14:00:12,403 INFO L226 Difference]: Without dead ends: 128133 [2020-10-13 14:00:12,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128133 states. [2020-10-13 14:00:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128133 to 128131. [2020-10-13 14:00:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128131 states. [2020-10-13 14:00:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128131 states to 128131 states and 205851 transitions. [2020-10-13 14:00:23,622 INFO L78 Accepts]: Start accepts. Automaton has 128131 states and 205851 transitions. Word has length 127 [2020-10-13 14:00:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:23,622 INFO L479 AbstractCegarLoop]: Abstraction has 128131 states and 205851 transitions. [2020-10-13 14:00:23,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 128131 states and 205851 transitions. [2020-10-13 14:00:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 14:00:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:23,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:00:23,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:00:23,623 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash -309812348, now seen corresponding path program 1 times [2020-10-13 14:00:23,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:23,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385361895] [2020-10-13 14:00:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:25,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:28,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:28,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 14:00:28,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:00:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:00:28,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 14:00:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:00:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:28,994 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:00:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:29,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:29,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385361895] [2020-10-13 14:00:29,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:29,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:29,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022313092] [2020-10-13 14:00:29,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:29,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:29,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:29,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:29,034 INFO L87 Difference]: Start difference. First operand 128131 states and 205851 transitions. Second operand 4 states. [2020-10-13 14:00:29,498 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 14:00:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:40,796 INFO L93 Difference]: Finished difference Result 289441 states and 464477 transitions. [2020-10-13 14:00:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:40,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-13 14:00:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:41,014 INFO L225 Difference]: With dead ends: 289441 [2020-10-13 14:00:41,015 INFO L226 Difference]: Without dead ends: 161523 [2020-10-13 14:00:41,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161523 states. [2020-10-13 14:00:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161523 to 161521. [2020-10-13 14:00:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161521 states. [2020-10-13 14:00:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161521 states to 161521 states and 258485 transitions. [2020-10-13 14:00:55,532 INFO L78 Accepts]: Start accepts. Automaton has 161521 states and 258485 transitions. Word has length 130 [2020-10-13 14:00:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:55,532 INFO L479 AbstractCegarLoop]: Abstraction has 161521 states and 258485 transitions. [2020-10-13 14:00:55,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 161521 states and 258485 transitions. [2020-10-13 14:00:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:00:55,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:55,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:00:55,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:00:55,533 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash -856812729, now seen corresponding path program 1 times [2020-10-13 14:00:55,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:55,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706679273] [2020-10-13 14:00:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:55,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking...