/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/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:33:01,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:33:01,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:33:01,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:33:01,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:33:01,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:33:01,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:33:01,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:33:01,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:33:01,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:33:01,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:33:01,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:33:01,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:33:01,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:33:01,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:33:01,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:33:01,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:33:01,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:33:01,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:33:01,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:33:01,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:33:01,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:33:01,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:33:01,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:33:01,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:33:01,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:33:01,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:33:01,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:33:01,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:33:01,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:33:01,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:33:01,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:33:01,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:33:01,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:33:01,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:33:01,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:33:01,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:33:01,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:33:01,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:33:01,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:33:01,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:33:01,853 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 13:33:01,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:33:01,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:33:01,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:33:01,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:33:01,877 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:33:01,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:33:01,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:33:01,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:33:01,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:33:01,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:33:01,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:33:01,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:33:01,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:33:01,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:33:01,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:33:01,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:33:01,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:33:01,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:33:01,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:33:01,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:33:01,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:33:01,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:33:01,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:33:01,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:33:01,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:33:01,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:33:01,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:33:01,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:33:01,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:33:01,881 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 13:33:02,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:33:02,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:33:02,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:33:02,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:33:02,197 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:33:02,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2020-10-13 13:33:02,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d168df8f/02a9b351cf844819ac229e06ca15e267/FLAG4894f5227 [2020-10-13 13:33:02,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:33:02,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2020-10-13 13:33:02,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d168df8f/02a9b351cf844819ac229e06ca15e267/FLAG4894f5227 [2020-10-13 13:33:03,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d168df8f/02a9b351cf844819ac229e06ca15e267 [2020-10-13 13:33:03,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:33:03,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:33:03,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:33:03,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:33:03,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:33:03,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7184f8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03, skipping insertion in model container [2020-10-13 13:33:03,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:33:03,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:33:03,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:33:03,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:33:03,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:33:03,639 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:33:03,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03 WrapperNode [2020-10-13 13:33:03,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:33:03,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:33:03,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:33:03,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:33:03,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (1/1) ... [2020-10-13 13:33:03,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:33:03,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:33:03,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:33:03,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:33:03,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (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 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:33:03,756 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-13 13:33:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-13 13:33:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:33:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:33:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:33:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:33:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:33:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:33:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:33:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:33:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:33:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:33:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:33:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:33:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:33:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:33:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:33:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:33:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:33:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 13:33:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:33:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:33:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:33:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:33:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:33:04,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:33:04,499 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:33:04,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:33:04 BoogieIcfgContainer [2020-10-13 13:33:04,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:33:04,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:33:04,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:33:04,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:33:04,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:33:03" (1/3) ... [2020-10-13 13:33:04,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1753638b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:33:04, skipping insertion in model container [2020-10-13 13:33:04,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:33:03" (2/3) ... [2020-10-13 13:33:04,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1753638b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:33:04, skipping insertion in model container [2020-10-13 13:33:04,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:33:04" (3/3) ... [2020-10-13 13:33:04,514 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2020-10-13 13:33:04,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:33:04,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:33:04,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:33:04,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:33:04,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:33:04,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:33:04,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:33:04,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:33:04,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:33:04,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:33:04,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:33:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-13 13:33:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:33:04,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:04,609 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] [2020-10-13 13:33:04,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:04,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1611462146, now seen corresponding path program 1 times [2020-10-13 13:33:04,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:04,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455306358] [2020-10-13 13:33:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 13:33:05,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-13 13:33:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:33:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:33:05,391 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:05,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:33:05,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:33:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:33:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:33:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:05,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:33:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:05,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:33:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:33:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:33:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:05,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:05,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:33:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:05,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:05,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:05,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:33:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:33:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:05,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:05,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:05,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 13:33:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:05,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:05,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:05,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:05,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:33:05,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:05,651 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 13:33:05,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455306358] [2020-10-13 13:33:05,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:05,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:33:05,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524947962] [2020-10-13 13:33:05,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:33:05,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:05,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:33:05,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:33:05,677 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 8 states. [2020-10-13 13:33:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:33:06,873 INFO L93 Difference]: Finished difference Result 274 states and 411 transitions. [2020-10-13 13:33:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:33:06,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-13 13:33:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:33:06,888 INFO L225 Difference]: With dead ends: 274 [2020-10-13 13:33:06,888 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 13:33:06,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:33:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 13:33:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2020-10-13 13:33:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 13:33:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 236 transitions. [2020-10-13 13:33:06,953 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 236 transitions. Word has length 68 [2020-10-13 13:33:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:33:06,954 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 236 transitions. [2020-10-13 13:33:06,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:33:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 236 transitions. [2020-10-13 13:33:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:33:06,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:06,958 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] [2020-10-13 13:33:06,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:33:06,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:06,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1167561472, now seen corresponding path program 1 times [2020-10-13 13:33:06,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:06,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336962703] [2020-10-13 13:33:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 13:33:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-13 13:33:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:33:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:33:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:33:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,738 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:07,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:33:07,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:07,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:33:07,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:07,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:33:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:07,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:07,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:33:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:07,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:33:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:07,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:33:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:33:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:07,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:07,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:33:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:33:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:07,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:07,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:07,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:07,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:07,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:07,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:07,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:07,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:07,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:33:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:08,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 13:33:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:08,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:08,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:08,061 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 13:33:08,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336962703] [2020-10-13 13:33:08,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:08,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:33:08,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760938888] [2020-10-13 13:33:08,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:33:08,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:08,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:33:08,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:33:08,066 INFO L87 Difference]: Start difference. First operand 155 states and 236 transitions. Second operand 14 states. [2020-10-13 13:33:08,318 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 13:33:08,470 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 13:33:08,699 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 13:33:08,858 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 13:33:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:33:10,362 INFO L93 Difference]: Finished difference Result 272 states and 403 transitions. [2020-10-13 13:33:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:33:10,363 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-13 13:33:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:33:10,367 INFO L225 Difference]: With dead ends: 272 [2020-10-13 13:33:10,367 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 13:33:10,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:33:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 13:33:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2020-10-13 13:33:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 13:33:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2020-10-13 13:33:10,395 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 68 [2020-10-13 13:33:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:33:10,395 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2020-10-13 13:33:10,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:33:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2020-10-13 13:33:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:33:10,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:10,400 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] [2020-10-13 13:33:10,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:33:10,401 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:10,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:10,401 INFO L82 PathProgramCache]: Analyzing trace with hash 827322511, now seen corresponding path program 1 times [2020-10-13 13:33:10,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:10,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566467568] [2020-10-13 13:33:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:33:15,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:33:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:33:15,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:33:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:33:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:33:15,663 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:33:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:15,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:33:15,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:33:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:33:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:33:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:33:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:33:15,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:33:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:15,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:33:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:33:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:33:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:33:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:15,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:15,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:33:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:15,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:15,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:15,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:33:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:33:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:33:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:16,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:33:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:16,054 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 13:33:16,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566467568] [2020-10-13 13:33:16,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:16,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:33:16,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86259832] [2020-10-13 13:33:16,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:33:16,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:16,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:33:16,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:33:16,059 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand 11 states. [2020-10-13 13:33:16,268 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 13:33:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:33:18,624 INFO L93 Difference]: Finished difference Result 364 states and 505 transitions. [2020-10-13 13:33:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:33:18,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-10-13 13:33:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:33:18,638 INFO L225 Difference]: With dead ends: 364 [2020-10-13 13:33:18,639 INFO L226 Difference]: Without dead ends: 259 [2020-10-13 13:33:18,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-13 13:33:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-13 13:33:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 246. [2020-10-13 13:33:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-13 13:33:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 337 transitions. [2020-10-13 13:33:18,696 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 337 transitions. Word has length 99 [2020-10-13 13:33:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:33:18,698 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 337 transitions. [2020-10-13 13:33:18,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:33:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 337 transitions. [2020-10-13 13:33:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:33:18,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:18,705 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] [2020-10-13 13:33:18,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:33:18,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1776641244, now seen corresponding path program 1 times [2020-10-13 13:33:18,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:18,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902150586] [2020-10-13 13:33:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:23,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:33:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 13:33:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:23,901 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:23,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:23,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:23,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:33:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:33:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:33:23,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:23,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:33:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:23,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:33:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:24,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:24,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:24,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:33:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:24,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:24,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:24,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:24,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:33:24,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:33:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:33:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:33:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:24,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:24,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:24,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:24,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:33:24,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:24,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:33:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:33:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:33:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:24,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:24,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:33:24,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:24,171 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 13:33:24,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902150586] [2020-10-13 13:33:24,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:24,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:33:24,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132330129] [2020-10-13 13:33:24,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:33:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:24,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:33:24,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:33:24,174 INFO L87 Difference]: Start difference. First operand 246 states and 337 transitions. Second operand 11 states. [2020-10-13 13:33:24,361 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 13:33:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:33:26,308 INFO L93 Difference]: Finished difference Result 634 states and 895 transitions. [2020-10-13 13:33:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:33:26,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-13 13:33:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:33:26,313 INFO L225 Difference]: With dead ends: 634 [2020-10-13 13:33:26,313 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 13:33:26,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-13 13:33:26,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 13:33:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 416. [2020-10-13 13:33:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-13 13:33:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 583 transitions. [2020-10-13 13:33:26,383 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 583 transitions. Word has length 100 [2020-10-13 13:33:26,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:33:26,385 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 583 transitions. [2020-10-13 13:33:26,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:33:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 583 transitions. [2020-10-13 13:33:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:33:26,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:26,392 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] [2020-10-13 13:33:26,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:33:26,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:26,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1460293037, now seen corresponding path program 1 times [2020-10-13 13:33:26,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:26,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184592903] [2020-10-13 13:33:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:33:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:33:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2631 [2020-10-13 13:33:29,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:33:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:33:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,212 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:29,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:33:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:33:29,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:33:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:33:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:33:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:33:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:29,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:33:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:33:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:29,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:29,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:33:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:29,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:33:29,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:29,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:33:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:29,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:29,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:33:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:29,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:33:29,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:33:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:33:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 13:33:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:33:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:33:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:33:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:29,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:29,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:29,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:33:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:29,518 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 13:33:29,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184592903] [2020-10-13 13:33:29,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:29,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:33:29,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145065831] [2020-10-13 13:33:29,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:33:29,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:29,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:33:29,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:33:29,521 INFO L87 Difference]: Start difference. First operand 416 states and 583 transitions. Second operand 11 states. [2020-10-13 13:33:29,677 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 13:33:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:33:31,504 INFO L93 Difference]: Finished difference Result 1136 states and 1613 transitions. [2020-10-13 13:33:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:33:31,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-10-13 13:33:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:33:31,512 INFO L225 Difference]: With dead ends: 1136 [2020-10-13 13:33:31,512 INFO L226 Difference]: Without dead ends: 770 [2020-10-13 13:33:31,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-13 13:33:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-10-13 13:33:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 732. [2020-10-13 13:33:31,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-13 13:33:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1035 transitions. [2020-10-13 13:33:31,576 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1035 transitions. Word has length 101 [2020-10-13 13:33:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:33:31,577 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1035 transitions. [2020-10-13 13:33:31,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:33:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1035 transitions. [2020-10-13 13:33:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:33:31,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:31,578 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] [2020-10-13 13:33:31,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:33:31,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:31,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1892186876, now seen corresponding path program 1 times [2020-10-13 13:33:31,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:31,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618161542] [2020-10-13 13:33:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:32,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:32,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:33:32,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:33:32,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-13 13:33:32,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:32,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:32,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:33:32,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 13:33:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:32,898 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:32,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:33:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:32,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:33:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:33:32,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:33:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:33:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:32,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:32,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:32,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:33:32,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:33:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:32,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:32,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:32,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:33:32,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:32,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:33:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:33,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:33,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:33,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:33,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:33:33,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:33:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:33:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:33:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:33,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:33,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:33:33,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:33:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:33,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:33:33,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:33:33,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:33:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:33:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:33:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:33:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:33,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:33,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:33:33,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:33,173 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 13:33:33,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618161542] [2020-10-13 13:33:33,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:33,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:33:33,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134084874] [2020-10-13 13:33:33,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:33:33,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:33,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:33:33,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:33:33,176 INFO L87 Difference]: Start difference. First operand 732 states and 1035 transitions. Second operand 11 states. [2020-10-13 13:33:33,349 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 13:33:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:33:35,525 INFO L93 Difference]: Finished difference Result 2064 states and 2925 transitions. [2020-10-13 13:33:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:33:35,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 13:33:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:33:35,546 INFO L225 Difference]: With dead ends: 2064 [2020-10-13 13:33:35,546 INFO L226 Difference]: Without dead ends: 1382 [2020-10-13 13:33:35,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-13 13:33:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-13 13:33:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1316. [2020-10-13 13:33:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-10-13 13:33:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1859 transitions. [2020-10-13 13:33:35,671 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1859 transitions. Word has length 102 [2020-10-13 13:33:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:33:35,672 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 1859 transitions. [2020-10-13 13:33:35,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:33:35,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1859 transitions. [2020-10-13 13:33:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:33:35,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:33:35,674 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] [2020-10-13 13:33:35,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:33:35,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:33:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:33:35,675 INFO L82 PathProgramCache]: Analyzing trace with hash 365235733, now seen corresponding path program 1 times [2020-10-13 13:33:35,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:33:35,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367345274] [2020-10-13 13:33:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:33:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:37,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:37,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 13:33:37,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:33:37,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2036 [2020-10-13 13:33:37,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:37,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:33:37,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:33:37,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 13:33:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:37,966 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:33:37,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:33:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:37,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:37,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:33:37,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:33:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:33:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:33:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:33:38,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:33:38,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:33:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:33:38,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:33:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:33:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:33:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:33:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:33:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:38,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:33:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:33:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:33:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:33:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:33:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:33:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:33:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:33:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:33:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:33:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 13:33:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:33:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:33:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:33:38,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:33:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:33:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:33:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:33:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:33:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:33:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:33:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:33:38,412 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 13:33:38,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367345274] [2020-10-13 13:33:38,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:33:38,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 13:33:38,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969548797] [2020-10-13 13:33:38,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:33:38,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:33:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:33:38,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:33:38,414 INFO L87 Difference]: Start difference. First operand 1316 states and 1859 transitions. Second operand 18 states. [2020-10-13 13:33:38,651 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:38,839 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:39,430 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:39,989 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:33:40,146 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-13 13:33:40,306 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:41,082 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:33:41,255 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:33:41,427 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:33:41,609 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:33:41,779 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:33:41,969 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:33:42,136 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 13:33:43,574 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:33:43,766 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:33:43,934 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:44,112 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:33:44,276 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:44,476 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:33:44,644 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:44,814 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:44,977 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:45,174 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:45,342 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:45,542 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:45,709 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:46,105 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:46,270 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 13:33:48,742 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:48,932 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:33:49,125 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:49,315 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:33:49,506 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:49,683 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:33:49,869 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:33:50,079 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:33:50,264 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:50,438 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:50,629 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:50,805 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:50,985 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:51,177 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:51,373 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:51,548 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:51,735 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:51,917 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:52,223 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:33:52,393 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:33:52,573 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 13:33:52,742 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-13 13:33:52,934 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 13:33:53,115 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-13 13:33:53,525 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 13:33:53,702 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-13 13:33:54,075 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 13:33:54,238 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-13 13:33:55,050 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 13:33:55,219 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 13:34:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:34:25,919 INFO L93 Difference]: Finished difference Result 36897 states and 54159 transitions. [2020-10-13 13:34:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2020-10-13 13:34:25,921 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-10-13 13:34:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:34:26,106 INFO L225 Difference]: With dead ends: 36897 [2020-10-13 13:34:26,106 INFO L226 Difference]: Without dead ends: 35631 [2020-10-13 13:34:26,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42592 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=8249, Invalid=89407, Unknown=0, NotChecked=0, Total=97656 [2020-10-13 13:34:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35631 states. [2020-10-13 13:34:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35631 to 34340. [2020-10-13 13:34:29,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34340 states. [2020-10-13 13:34:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34340 states to 34340 states and 46721 transitions. [2020-10-13 13:34:29,477 INFO L78 Accepts]: Start accepts. Automaton has 34340 states and 46721 transitions. Word has length 103 [2020-10-13 13:34:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:34:29,478 INFO L479 AbstractCegarLoop]: Abstraction has 34340 states and 46721 transitions. [2020-10-13 13:34:29,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:34:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 34340 states and 46721 transitions. [2020-10-13 13:34:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:34:29,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:34:29,481 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] [2020-10-13 13:34:29,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:34:29,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:34:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:34:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash 251724021, now seen corresponding path program 1 times [2020-10-13 13:34:29,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:34:29,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501277435] [2020-10-13 13:34:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:34:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:31,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:31,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 13:34:31,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:34:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1923 [2020-10-13 13:34:31,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:34:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 13:34:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:31,802 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:34:31,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:34:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:31,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:34:31,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 13:34:31,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:34:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:34:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:34:32,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:34:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:34:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:34:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:34:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:34:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:34:32,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:34:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:34:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:34:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:34:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:34:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:34:32,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:34:32,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:34:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:34:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:34:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:32,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:34:32,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:34:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:34:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:34:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:32,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:34:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:34:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:34:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:34:32,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:34:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:34:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:32,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:32,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:34:32,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:34:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:34:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:32,238 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 13:34:32,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501277435] [2020-10-13 13:34:32,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:34:32,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:34:32,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488556637] [2020-10-13 13:34:32,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:34:32,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:34:32,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:34:32,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:34:32,240 INFO L87 Difference]: Start difference. First operand 34340 states and 46721 transitions. Second operand 11 states. [2020-10-13 13:34:32,427 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 13:34:33,643 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 13:34:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:34:37,345 INFO L93 Difference]: Finished difference Result 99106 states and 134881 transitions. [2020-10-13 13:34:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:34:37,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 13:34:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:34:37,615 INFO L225 Difference]: With dead ends: 99106 [2020-10-13 13:34:37,615 INFO L226 Difference]: Without dead ends: 64828 [2020-10-13 13:34:37,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:34:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64828 states. [2020-10-13 13:34:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64828 to 63116. [2020-10-13 13:34:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63116 states. [2020-10-13 13:34:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63116 states to 63116 states and 85283 transitions. [2020-10-13 13:34:43,337 INFO L78 Accepts]: Start accepts. Automaton has 63116 states and 85283 transitions. Word has length 104 [2020-10-13 13:34:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:34:43,337 INFO L479 AbstractCegarLoop]: Abstraction has 63116 states and 85283 transitions. [2020-10-13 13:34:43,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:34:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 63116 states and 85283 transitions. [2020-10-13 13:34:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:34:43,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:34:43,341 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] [2020-10-13 13:34:43,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:34:43,341 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:34:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:34:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash -562918845, now seen corresponding path program 1 times [2020-10-13 13:34:43,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:34:43,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917501275] [2020-10-13 13:34:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:34:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:43,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 13:34:43,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-13 13:34:43,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:34:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:34:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 13:34:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:44,100 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:34:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:34:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:34:44,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:34:44,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:34:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:34:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:34:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:34:44,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:34:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:34:44,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 13:34:44,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:34:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:34:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:34:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:34:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:34:44,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:34:44,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:34:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:34:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:34:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:34:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:34:44,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:34:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:34:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:34:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:34:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:34:44,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:34:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:34:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:34:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:34:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:34:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:34:44,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:34:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:34:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:34:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:34:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:34:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:34:44,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:34:44,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:34:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:34:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:34:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:34:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:34:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:34:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:34:44,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:34:44,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:34:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:34:44,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:34:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:34:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:34:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:34:44,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:34:44,799 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 13:34:44,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917501275] [2020-10-13 13:34:44,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:34:44,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 13:34:44,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865790571] [2020-10-13 13:34:44,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:34:44,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:34:44,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:34:44,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:34:44,803 INFO L87 Difference]: Start difference. First operand 63116 states and 85283 transitions. Second operand 19 states. [2020-10-13 13:34:45,103 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 13:34:45,302 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 13:34:45,475 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 13:34:45,659 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 13:34:45,850 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 13:34:51,569 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 13:34:53,053 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 13:34:53,239 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 13:34:53,454 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 13:34:53,800 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 13:35:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:35:30,639 INFO L93 Difference]: Finished difference Result 668256 states and 909004 transitions. [2020-10-13 13:35:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-13 13:35:30,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2020-10-13 13:35:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:35:32,342 INFO L225 Difference]: With dead ends: 668256 [2020-10-13 13:35:32,342 INFO L226 Difference]: Without dead ends: 605470 [2020-10-13 13:35:32,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3908 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2140, Invalid=9416, Unknown=0, NotChecked=0, Total=11556 [2020-10-13 13:35:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605470 states. [2020-10-13 13:36:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605470 to 590204. [2020-10-13 13:36:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590204 states. [2020-10-13 13:36:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590204 states to 590204 states and 797667 transitions. [2020-10-13 13:36:21,779 INFO L78 Accepts]: Start accepts. Automaton has 590204 states and 797667 transitions. Word has length 104 [2020-10-13 13:36:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:21,780 INFO L479 AbstractCegarLoop]: Abstraction has 590204 states and 797667 transitions. [2020-10-13 13:36:21,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:36:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 590204 states and 797667 transitions. [2020-10-13 13:36:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:36:21,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:21,787 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] [2020-10-13 13:36:21,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:36:21,787 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:21,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2070464251, now seen corresponding path program 1 times [2020-10-13 13:36:21,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:21,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078955746] [2020-10-13 13:36:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:36:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-13 13:36:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:36:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-13 13:36:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:36:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:22,461 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 13:36:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:36:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:36:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:36:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:36:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:36:22,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:36:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:36:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:22,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:22,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:36:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:36:22,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:36:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:36:22,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:22,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:36:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:36:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:36:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:36:22,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:22,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:36:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:22,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:22,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:22,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:36:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:22,881 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 13:36:22,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078955746] [2020-10-13 13:36:22,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:22,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:36:22,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329843251] [2020-10-13 13:36:22,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:36:22,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:22,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:36:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:36:22,886 INFO L87 Difference]: Start difference. First operand 590204 states and 797667 transitions. Second operand 14 states.