/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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:37:01,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:37:01,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:37:01,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:37:01,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:37:01,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:37:01,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:37:01,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:37:01,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:37:01,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:37:01,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:37:01,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:37:01,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:37:01,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:37:01,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:37:01,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:37:01,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:37:01,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:37:01,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:37:01,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:37:01,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:37:01,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:37:01,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:37:01,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:37:01,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:37:01,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:37:01,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:37:01,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:37:01,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:37:01,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:37:01,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:37:01,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:37:01,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:37:01,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:37:01,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:37:01,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:37:01,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:37:01,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:37:01,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:37:01,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:37:01,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:37:01,930 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 13:37:01,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:37:01,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:37:01,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:37:01,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:37:01,962 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:37:01,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:37:01,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:37:01,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:37:01,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:37:01,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:37:01,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:37:01,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:37:01,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:37:01,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:37:01,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:37:01,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:37:01,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:37:01,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:37:01,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:37:01,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:37:01,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:37:01,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:37:01,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:37:01,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:37:01,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:37:01,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:37:01,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:37:01,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:37:01,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:37:01,971 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 13:37:02,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:37:02,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:37:02,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:37:02,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:37:02,284 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:37:02,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:37:02,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b4da291/3ef6467b63ef44ad967f0479d2905771/FLAG252ed4137 [2020-10-13 13:37:02,878 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:37:02,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:37:02,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b4da291/3ef6467b63ef44ad967f0479d2905771/FLAG252ed4137 [2020-10-13 13:37:03,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b4da291/3ef6467b63ef44ad967f0479d2905771 [2020-10-13 13:37:03,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:37:03,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:37:03,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:37:03,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:37:03,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:37:03,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3a6caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03, skipping insertion in model container [2020-10-13 13:37:03,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:37:03,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:37:03,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:37:03,638 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:37:03,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:37:03,737 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:37:03,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03 WrapperNode [2020-10-13 13:37:03,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:37:03,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:37:03,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:37:03,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:37:03,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (1/1) ... [2020-10-13 13:37:03,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:37:03,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:37:03,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:37:03,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:37:03,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (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 13:37:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:37:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:37:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:37:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:37:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:37:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:37:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:37:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:37:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:37:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:37:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:37:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:37:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:37:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:37:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:37:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:37:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:37:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:37:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:37:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:37:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:37:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:37:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:37:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:37:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:37:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:37:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:37:04,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:37:04,606 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:37:04,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:37:04 BoogieIcfgContainer [2020-10-13 13:37:04,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:37:04,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:37:04,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:37:04,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:37:04,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:37:03" (1/3) ... [2020-10-13 13:37:04,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756d2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:37:04, skipping insertion in model container [2020-10-13 13:37:04,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:03" (2/3) ... [2020-10-13 13:37:04,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756d2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:37:04, skipping insertion in model container [2020-10-13 13:37:04,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:37:04" (3/3) ... [2020-10-13 13:37:04,620 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:37:04,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:37:04,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:37:04,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:37:04,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:37:04,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:37:04,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:37:04,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:37:04,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:37:04,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:37:04,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:37:04,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:37:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-10-13 13:37:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:37:04,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:04,714 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] [2020-10-13 13:37:04,715 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1583782225, now seen corresponding path program 1 times [2020-10-13 13:37:04,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:04,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824470843] [2020-10-13 13:37:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:37:05,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-13 13:37:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:37:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:37:05,555 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:05,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:37:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:37:05,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:37:05,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:37:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:05,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:05,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:37:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:37:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:37:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:05,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:37:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:05,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:37:05,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:05,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:05,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:05,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:05,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:05,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:05,810 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 13:37:05,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824470843] [2020-10-13 13:37:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:05,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:37:05,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717038942] [2020-10-13 13:37:05,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:37:05,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:37:05,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:37:05,862 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 6 states. [2020-10-13 13:37:06,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:06,945 INFO L93 Difference]: Finished difference Result 302 states and 480 transitions. [2020-10-13 13:37:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:37:06,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 13:37:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:06,960 INFO L225 Difference]: With dead ends: 302 [2020-10-13 13:37:06,961 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 13:37:06,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 13:37:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2020-10-13 13:37:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 13:37:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 279 transitions. [2020-10-13 13:37:07,022 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 279 transitions. Word has length 65 [2020-10-13 13:37:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:07,023 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 279 transitions. [2020-10-13 13:37:07,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:37:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 279 transitions. [2020-10-13 13:37:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:37:07,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:07,027 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] [2020-10-13 13:37:07,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:37:07,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:07,029 INFO L82 PathProgramCache]: Analyzing trace with hash 554422927, now seen corresponding path program 1 times [2020-10-13 13:37:07,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:07,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724779687] [2020-10-13 13:37:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:07,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:07,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:37:07,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-13 13:37:07,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:37:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:37:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:07,989 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:37:08,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 13:37:08,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:37:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:37:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:37:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:37:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:08,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:08,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:37:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:08,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:08,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:37:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:08,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:08,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:08,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:08,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:08,322 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 13:37:08,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724779687] [2020-10-13 13:37:08,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:08,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:37:08,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814827398] [2020-10-13 13:37:08,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:37:08,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:37:08,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:37:08,327 INFO L87 Difference]: Start difference. First operand 174 states and 279 transitions. Second operand 12 states. [2020-10-13 13:37:08,823 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:09,025 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:37:09,310 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:09,502 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:10,981 INFO L93 Difference]: Finished difference Result 300 states and 472 transitions. [2020-10-13 13:37:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:37:10,982 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 13:37:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:10,988 INFO L225 Difference]: With dead ends: 300 [2020-10-13 13:37:10,989 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 13:37:10,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 13:37:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2020-10-13 13:37:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 13:37:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-10-13 13:37:11,040 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 65 [2020-10-13 13:37:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:11,040 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-10-13 13:37:11,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:37:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-10-13 13:37:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:37:11,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:11,047 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] [2020-10-13 13:37:11,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:37:11,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 551989973, now seen corresponding path program 1 times [2020-10-13 13:37:11,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:11,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421736641] [2020-10-13 13:37:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:11,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:37:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:37:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:37:16,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:37:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:37:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:16,332 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:16,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:16,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:37:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:37:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:16,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:16,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:16,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:16,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:37:16,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:37:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:16,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:16,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:37:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:37:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:16,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:16,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:16,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:16,628 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 13:37:16,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421736641] [2020-10-13 13:37:16,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:16,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:16,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120506248] [2020-10-13 13:37:16,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:16,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:16,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:16,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:16,631 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 9 states. [2020-10-13 13:37:16,832 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:18,677 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:37:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:19,276 INFO L93 Difference]: Finished difference Result 424 states and 636 transitions. [2020-10-13 13:37:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:37:19,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:37:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:19,281 INFO L225 Difference]: With dead ends: 424 [2020-10-13 13:37:19,281 INFO L226 Difference]: Without dead ends: 322 [2020-10-13 13:37:19,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:37:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-13 13:37:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 277. [2020-10-13 13:37:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-13 13:37:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 403 transitions. [2020-10-13 13:37:19,313 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 403 transitions. Word has length 94 [2020-10-13 13:37:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:19,313 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 403 transitions. [2020-10-13 13:37:19,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 403 transitions. [2020-10-13 13:37:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:37:19,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:19,317 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] [2020-10-13 13:37:19,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:37:19,317 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:19,318 INFO L82 PathProgramCache]: Analyzing trace with hash 829961930, now seen corresponding path program 1 times [2020-10-13 13:37:19,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:19,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783348988] [2020-10-13 13:37:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:37:24,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:37:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:37:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:37:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:37:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,557 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:24,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 13:37:24,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:37:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:24,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:24,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:24,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:37:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:24,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:24,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:37:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:24,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:24,888 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 13:37:24,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783348988] [2020-10-13 13:37:24,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:24,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:24,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440147426] [2020-10-13 13:37:24,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:24,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:24,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:24,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:24,890 INFO L87 Difference]: Start difference. First operand 277 states and 403 transitions. Second operand 9 states. [2020-10-13 13:37:25,081 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:27,157 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:27,500 INFO L93 Difference]: Finished difference Result 767 states and 1149 transitions. [2020-10-13 13:37:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:37:27,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:37:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:27,505 INFO L225 Difference]: With dead ends: 767 [2020-10-13 13:37:27,505 INFO L226 Difference]: Without dead ends: 562 [2020-10-13 13:37:27,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:37:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-13 13:37:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 484. [2020-10-13 13:37:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-13 13:37:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 717 transitions. [2020-10-13 13:37:27,550 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 717 transitions. Word has length 96 [2020-10-13 13:37:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:27,550 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 717 transitions. [2020-10-13 13:37:27,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 717 transitions. [2020-10-13 13:37:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:37:27,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:27,553 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] [2020-10-13 13:37:27,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:37:27,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2005021003, now seen corresponding path program 1 times [2020-10-13 13:37:27,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:27,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494419107] [2020-10-13 13:37:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:32,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:37:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:37:32,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:37:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:37:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:37:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:32,810 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:32,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:32,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:32,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:32,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:32,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:32,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:37:32,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:37:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:33,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:33,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:37:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:33,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:33,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:37:33,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:33,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:37:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:33,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:37:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:33,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:33,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:33,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:33,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:33,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:37:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:37:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:33,248 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 13:37:33,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494419107] [2020-10-13 13:37:33,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:33,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:37:33,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817413208] [2020-10-13 13:37:33,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:37:33,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:33,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:37:33,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:37:33,251 INFO L87 Difference]: Start difference. First operand 484 states and 717 transitions. Second operand 13 states. [2020-10-13 13:37:33,431 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:33,829 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:34,004 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:34,670 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:37:35,030 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-13 13:37:35,678 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2020-10-13 13:37:36,045 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 13:37:37,158 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-13 13:37:38,029 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 13:37:38,274 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:37:39,116 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 13:37:39,423 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-13 13:37:40,171 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:37:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:40,735 INFO L93 Difference]: Finished difference Result 2948 states and 4544 transitions. [2020-10-13 13:37:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 13:37:40,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-13 13:37:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:40,751 INFO L225 Difference]: With dead ends: 2948 [2020-10-13 13:37:40,751 INFO L226 Difference]: Without dead ends: 2536 [2020-10-13 13:37:40,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=520, Invalid=1736, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 13:37:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2020-10-13 13:37:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1719. [2020-10-13 13:37:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-10-13 13:37:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2635 transitions. [2020-10-13 13:37:40,897 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2635 transitions. Word has length 98 [2020-10-13 13:37:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:40,898 INFO L479 AbstractCegarLoop]: Abstraction has 1719 states and 2635 transitions. [2020-10-13 13:37:40,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:37:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2635 transitions. [2020-10-13 13:37:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:37:40,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:40,901 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 13:37:40,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:37:40,901 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1494122404, now seen corresponding path program 1 times [2020-10-13 13:37:40,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:40,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282390398] [2020-10-13 13:37:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:37:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,187 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:46,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:46,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:37:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:37:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:46,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:46,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:37:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:37:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:46,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:46,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:37:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:46,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:46,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:37:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:46,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:46,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,575 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 13:37:46,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282390398] [2020-10-13 13:37:46,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:46,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:46,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7885014] [2020-10-13 13:37:46,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:46,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:46,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:46,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:46,579 INFO L87 Difference]: Start difference. First operand 1719 states and 2635 transitions. Second operand 9 states. [2020-10-13 13:37:46,772 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:46,973 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:37:47,169 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 13:37:47,794 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-13 13:37:48,350 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:51,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:51,140 INFO L93 Difference]: Finished difference Result 5977 states and 9266 transitions. [2020-10-13 13:37:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:37:51,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-13 13:37:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:51,165 INFO L225 Difference]: With dead ends: 5977 [2020-10-13 13:37:51,166 INFO L226 Difference]: Without dead ends: 4289 [2020-10-13 13:37:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:37:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2020-10-13 13:37:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 3787. [2020-10-13 13:37:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3787 states. [2020-10-13 13:37:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 5725 transitions. [2020-10-13 13:37:51,471 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 5725 transitions. Word has length 99 [2020-10-13 13:37:51,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:51,472 INFO L479 AbstractCegarLoop]: Abstraction has 3787 states and 5725 transitions. [2020-10-13 13:37:51,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 5725 transitions. [2020-10-13 13:37:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:37:51,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:51,477 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 13:37:51,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:37:51,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1661857224, now seen corresponding path program 1 times [2020-10-13 13:37:51,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:51,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346984565] [2020-10-13 13:37:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:52,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:37:56,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:37:56,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:37:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:37:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,742 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:56,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:56,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:37:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:37:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:56,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:56,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:37:56,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:37:56,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:37:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:56,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:56,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:37:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:56,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:37:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:56,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:56,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:56,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:56,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:56,979 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 13:37:56,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346984565] [2020-10-13 13:37:56,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:56,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:56,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247915519] [2020-10-13 13:37:56,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:56,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:56,981 INFO L87 Difference]: Start difference. First operand 3787 states and 5725 transitions. Second operand 9 states. [2020-10-13 13:37:57,468 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:59,420 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:37:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:59,779 INFO L93 Difference]: Finished difference Result 9535 states and 14577 transitions. [2020-10-13 13:37:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:59,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-13 13:37:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:59,817 INFO L225 Difference]: With dead ends: 9535 [2020-10-13 13:37:59,818 INFO L226 Difference]: Without dead ends: 6309 [2020-10-13 13:37:59,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2020-10-13 13:38:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5398. [2020-10-13 13:38:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5398 states. [2020-10-13 13:38:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 8164 transitions. [2020-10-13 13:38:00,283 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 8164 transitions. Word has length 100 [2020-10-13 13:38:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:00,284 INFO L479 AbstractCegarLoop]: Abstraction has 5398 states and 8164 transitions. [2020-10-13 13:38:00,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 8164 transitions. [2020-10-13 13:38:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:38:00,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:00,288 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 13:38:00,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:38:00,288 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:00,289 INFO L82 PathProgramCache]: Analyzing trace with hash 41801968, now seen corresponding path program 1 times [2020-10-13 13:38:00,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:00,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635699613] [2020-10-13 13:38:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:38:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:38:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:38:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:38:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:38:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,471 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:38:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:38:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:38:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:38:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:38:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:38:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:05,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:38:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:38:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:38:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:05,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:05,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:38:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:38:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:05,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:05,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:05,668 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 13:38:05,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635699613] [2020-10-13 13:38:05,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:05,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:38:05,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547948829] [2020-10-13 13:38:05,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:38:05,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:05,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:38:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:38:05,669 INFO L87 Difference]: Start difference. First operand 5398 states and 8164 transitions. Second operand 7 states. [2020-10-13 13:38:05,866 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:07,380 INFO L93 Difference]: Finished difference Result 11517 states and 17378 transitions. [2020-10-13 13:38:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:38:07,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-13 13:38:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:07,415 INFO L225 Difference]: With dead ends: 11517 [2020-10-13 13:38:07,415 INFO L226 Difference]: Without dead ends: 6153 [2020-10-13 13:38:07,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:38:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6153 states. [2020-10-13 13:38:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6153 to 5400. [2020-10-13 13:38:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5400 states. [2020-10-13 13:38:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 8166 transitions. [2020-10-13 13:38:07,784 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 8166 transitions. Word has length 100 [2020-10-13 13:38:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:07,785 INFO L479 AbstractCegarLoop]: Abstraction has 5400 states and 8166 transitions. [2020-10-13 13:38:07,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:38:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 8166 transitions. [2020-10-13 13:38:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:38:07,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:07,790 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 13:38:07,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:38:07,790 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:07,791 INFO L82 PathProgramCache]: Analyzing trace with hash 35316880, now seen corresponding path program 1 times [2020-10-13 13:38:07,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:07,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827670403] [2020-10-13 13:38:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:12,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:12,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:38:12,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:38:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:38:12,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:38:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:38:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:12,985 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:12,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:38:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:38:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:13,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:38:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:13,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:13,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:13,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:13,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:13,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:13,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:13,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:13,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:13,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:13,230 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 13:38:13,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827670403] [2020-10-13 13:38:13,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:13,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:38:13,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398815779] [2020-10-13 13:38:13,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:38:13,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:13,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:38:13,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:38:13,232 INFO L87 Difference]: Start difference. First operand 5400 states and 8166 transitions. Second operand 8 states. [2020-10-13 13:38:13,445 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:13,625 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:38:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:15,046 INFO L93 Difference]: Finished difference Result 11399 states and 17247 transitions. [2020-10-13 13:38:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:38:15,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-13 13:38:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:15,077 INFO L225 Difference]: With dead ends: 11399 [2020-10-13 13:38:15,078 INFO L226 Difference]: Without dead ends: 6019 [2020-10-13 13:38:15,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:38:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2020-10-13 13:38:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 5399. [2020-10-13 13:38:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5399 states. [2020-10-13 13:38:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 8162 transitions. [2020-10-13 13:38:15,453 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 8162 transitions. Word has length 101 [2020-10-13 13:38:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:15,453 INFO L479 AbstractCegarLoop]: Abstraction has 5399 states and 8162 transitions. [2020-10-13 13:38:15,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:38:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 8162 transitions. [2020-10-13 13:38:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:38:15,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:15,458 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 13:38:15,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:38:15,459 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1331469399, now seen corresponding path program 1 times [2020-10-13 13:38:15,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:15,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191565599] [2020-10-13 13:38:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:38:20,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:38:20,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:38:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:38:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:38:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,658 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:20,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:20,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:20,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:20,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:20,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:38:20,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:38:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:20,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:38:20,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:38:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:20,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:38:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:20,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:20,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:20,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:38:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:21,021 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 13:38:21,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191565599] [2020-10-13 13:38:21,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:21,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:38:21,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475722497] [2020-10-13 13:38:21,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:38:21,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:38:21,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:38:21,023 INFO L87 Difference]: Start difference. First operand 5399 states and 8162 transitions. Second operand 14 states. [2020-10-13 13:38:21,474 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2020-10-13 13:38:21,990 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:38:22,332 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 163 [2020-10-13 13:38:22,670 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2020-10-13 13:38:22,902 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-13 13:38:23,137 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-13 13:38:23,594 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-13 13:38:23,760 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-13 13:38:23,949 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:38:24,420 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-13 13:38:24,679 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:38:24,841 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:38:25,360 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-13 13:38:26,140 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2020-10-13 13:38:26,995 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-13 13:38:27,473 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-13 13:38:28,011 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-13 13:38:28,359 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-13 13:38:28,853 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-13 13:38:29,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:29,280 INFO L93 Difference]: Finished difference Result 16481 states and 25134 transitions. [2020-10-13 13:38:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 13:38:29,281 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-10-13 13:38:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:29,328 INFO L225 Difference]: With dead ends: 16481 [2020-10-13 13:38:29,328 INFO L226 Difference]: Without dead ends: 11263 [2020-10-13 13:38:29,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=433, Invalid=1373, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 13:38:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2020-10-13 13:38:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 9867. [2020-10-13 13:38:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9867 states. [2020-10-13 13:38:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9867 states to 9867 states and 15013 transitions. [2020-10-13 13:38:30,128 INFO L78 Accepts]: Start accepts. Automaton has 9867 states and 15013 transitions. Word has length 101 [2020-10-13 13:38:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:30,128 INFO L479 AbstractCegarLoop]: Abstraction has 9867 states and 15013 transitions. [2020-10-13 13:38:30,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:38:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9867 states and 15013 transitions. [2020-10-13 13:38:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:38:30,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:30,134 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 13:38:30,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:38:30,135 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:30,135 INFO L82 PathProgramCache]: Analyzing trace with hash 847700711, now seen corresponding path program 1 times [2020-10-13 13:38:30,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:30,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936460770] [2020-10-13 13:38:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:38:35,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:38:35,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:38:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,345 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:35,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:35,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:38:35,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:35,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:35,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:38:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:35,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:38:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:35,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:35,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:35,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:35,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:38:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:35,566 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 13:38:35,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936460770] [2020-10-13 13:38:35,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:35,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:35,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105273584] [2020-10-13 13:38:35,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:35,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:35,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:35,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:35,568 INFO L87 Difference]: Start difference. First operand 9867 states and 15013 transitions. Second operand 10 states. [2020-10-13 13:38:35,763 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:36,193 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:37,893 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:38,070 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:42,481 INFO L93 Difference]: Finished difference Result 31225 states and 47788 transitions. [2020-10-13 13:38:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:42,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-13 13:38:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:42,592 INFO L225 Difference]: With dead ends: 31225 [2020-10-13 13:38:42,593 INFO L226 Difference]: Without dead ends: 21539 [2020-10-13 13:38:42,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:38:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21539 states. [2020-10-13 13:38:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21539 to 18990. [2020-10-13 13:38:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18990 states. [2020-10-13 13:38:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18990 states to 18990 states and 28944 transitions. [2020-10-13 13:38:44,090 INFO L78 Accepts]: Start accepts. Automaton has 18990 states and 28944 transitions. Word has length 102 [2020-10-13 13:38:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:44,091 INFO L479 AbstractCegarLoop]: Abstraction has 18990 states and 28944 transitions. [2020-10-13 13:38:44,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:38:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 18990 states and 28944 transitions. [2020-10-13 13:38:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:38:44,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:44,103 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 13:38:44,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:38:44,103 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:44,103 INFO L82 PathProgramCache]: Analyzing trace with hash 673033170, now seen corresponding path program 1 times [2020-10-13 13:38:44,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:44,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135977217] [2020-10-13 13:38:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:38:49,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:38:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:38:49,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:38:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:38:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,310 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:49,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:49,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:49,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:38:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:38:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:38:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:49,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:38:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:49,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:49,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:49,519 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 13:38:49,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135977217] [2020-10-13 13:38:49,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:49,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:49,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484463413] [2020-10-13 13:38:49,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:49,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:49,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:49,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:49,521 INFO L87 Difference]: Start difference. First operand 18990 states and 28944 transitions. Second operand 9 states. [2020-10-13 13:38:49,711 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:51,036 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:38:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:53,184 INFO L93 Difference]: Finished difference Result 42624 states and 65488 transitions. [2020-10-13 13:38:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:38:53,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 13:38:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:53,270 INFO L225 Difference]: With dead ends: 42624 [2020-10-13 13:38:53,270 INFO L226 Difference]: Without dead ends: 27034 [2020-10-13 13:38:53,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:38:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27034 states. [2020-10-13 13:38:54,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27034 to 24138. [2020-10-13 13:38:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24138 states. [2020-10-13 13:38:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24138 states to 24138 states and 36758 transitions. [2020-10-13 13:38:54,653 INFO L78 Accepts]: Start accepts. Automaton has 24138 states and 36758 transitions. Word has length 103 [2020-10-13 13:38:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:54,653 INFO L479 AbstractCegarLoop]: Abstraction has 24138 states and 36758 transitions. [2020-10-13 13:38:54,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 24138 states and 36758 transitions. [2020-10-13 13:38:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:38:54,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:54,656 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 13:38:54,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:38:54,656 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:54,657 INFO L82 PathProgramCache]: Analyzing trace with hash -369187552, now seen corresponding path program 1 times [2020-10-13 13:38:54,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:54,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529284735] [2020-10-13 13:38:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:59,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:38:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:38:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 13:38:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:59,862 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:59,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:59,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 13:38:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:59,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:38:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:59,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:59,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:59,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:59,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:59,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:59,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:59,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:38:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:59,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:59,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:59,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:59,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:59,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:00,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:39:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:39:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:00,075 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 13:39:00,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529284735] [2020-10-13 13:39:00,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:00,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:00,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806728753] [2020-10-13 13:39:00,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:00,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:00,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:00,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:00,077 INFO L87 Difference]: Start difference. First operand 24138 states and 36758 transitions. Second operand 9 states. [2020-10-13 13:39:00,255 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:02,261 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:39:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:04,028 INFO L93 Difference]: Finished difference Result 67990 states and 103476 transitions. [2020-10-13 13:39:04,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:39:04,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 13:39:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:04,204 INFO L225 Difference]: With dead ends: 67990 [2020-10-13 13:39:04,204 INFO L226 Difference]: Without dead ends: 44040 [2020-10-13 13:39:04,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:39:04,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44040 states. [2020-10-13 13:39:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44040 to 38294. [2020-10-13 13:39:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38294 states. [2020-10-13 13:39:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38294 states to 38294 states and 58390 transitions. [2020-10-13 13:39:07,705 INFO L78 Accepts]: Start accepts. Automaton has 38294 states and 58390 transitions. Word has length 103 [2020-10-13 13:39:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:07,705 INFO L479 AbstractCegarLoop]: Abstraction has 38294 states and 58390 transitions. [2020-10-13 13:39:07,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 38294 states and 58390 transitions. [2020-10-13 13:39:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:39:07,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:07,708 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 13:39:07,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:39:07,709 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1234462005, now seen corresponding path program 1 times [2020-10-13 13:39:07,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:07,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767981763] [2020-10-13 13:39:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:07,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:12,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:39:12,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:39:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:39:12,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:39:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:39:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:39:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:12,895 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:12,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:12,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:12,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:39:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:39:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:12,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:12,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:13,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:39:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:13,109 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 13:39:13,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767981763] [2020-10-13 13:39:13,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:13,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:39:13,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842906350] [2020-10-13 13:39:13,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:39:13,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:13,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:39:13,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:39:13,111 INFO L87 Difference]: Start difference. First operand 38294 states and 58390 transitions. Second operand 10 states. [2020-10-13 13:39:13,297 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:13,723 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:39:14,251 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-13 13:39:14,986 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:39:15,145 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:21,058 INFO L93 Difference]: Finished difference Result 131812 states and 202331 transitions. [2020-10-13 13:39:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:39:21,059 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-13 13:39:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:21,368 INFO L225 Difference]: With dead ends: 131812 [2020-10-13 13:39:21,368 INFO L226 Difference]: Without dead ends: 93706 [2020-10-13 13:39:21,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:39:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93706 states. [2020-10-13 13:39:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93706 to 82306. [2020-10-13 13:39:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82306 states. [2020-10-13 13:39:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82306 states to 82306 states and 125554 transitions. [2020-10-13 13:39:27,719 INFO L78 Accepts]: Start accepts. Automaton has 82306 states and 125554 transitions. Word has length 105 [2020-10-13 13:39:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:27,719 INFO L479 AbstractCegarLoop]: Abstraction has 82306 states and 125554 transitions. [2020-10-13 13:39:27,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:39:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 82306 states and 125554 transitions. [2020-10-13 13:39:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:39:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:27,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:27,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:39:27,722 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1055296855, now seen corresponding path program 1 times [2020-10-13 13:39:27,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:27,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578216483] [2020-10-13 13:39:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:29,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:32,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:39:32,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:39:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:39:32,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 13:39:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:39:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:39:32,924 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:32,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:32,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:39:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:32,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:32,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:33,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:33,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:33,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:33,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:33,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:33,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:39:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:39:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:39:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:39:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:33,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:33,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:33,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:33,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:33,136 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 13:39:33,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578216483] [2020-10-13 13:39:33,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:33,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:33,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282200248] [2020-10-13 13:39:33,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:33,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:33,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:33,138 INFO L87 Difference]: Start difference. First operand 82306 states and 125554 transitions. Second operand 9 states. [2020-10-13 13:39:33,313 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:34,977 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:39:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:41,919 INFO L93 Difference]: Finished difference Result 215881 states and 330587 transitions. [2020-10-13 13:39:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:39:41,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 13:39:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:42,364 INFO L225 Difference]: With dead ends: 215881 [2020-10-13 13:39:42,364 INFO L226 Difference]: Without dead ends: 145331 [2020-10-13 13:39:42,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:39:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145331 states. [2020-10-13 13:39:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145331 to 132892. [2020-10-13 13:39:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132892 states. [2020-10-13 13:39:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132892 states to 132892 states and 199522 transitions. [2020-10-13 13:39:51,938 INFO L78 Accepts]: Start accepts. Automaton has 132892 states and 199522 transitions. Word has length 106 [2020-10-13 13:39:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:51,938 INFO L479 AbstractCegarLoop]: Abstraction has 132892 states and 199522 transitions. [2020-10-13 13:39:51,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 132892 states and 199522 transitions. [2020-10-13 13:39:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:39:51,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:51,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:51,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:39:51,941 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:51,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1318919821, now seen corresponding path program 1 times [2020-10-13 13:39:51,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:51,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261260030] [2020-10-13 13:39:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:39:56,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:39:56,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:39:56,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:39:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:39:56,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,136 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:57,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:57,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:39:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:39:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:39:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:39:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:57,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:57,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:39:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:57,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:57,337 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 13:39:57,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261260030] [2020-10-13 13:39:57,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:57,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:57,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586080949] [2020-10-13 13:39:57,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:57,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:57,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:57,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:57,339 INFO L87 Difference]: Start difference. First operand 132892 states and 199522 transitions. Second operand 9 states. [2020-10-13 13:39:57,519 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:58,897 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:40:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:11,803 INFO L93 Difference]: Finished difference Result 333290 states and 504118 transitions. [2020-10-13 13:40:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:40:11,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 13:40:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:12,481 INFO L225 Difference]: With dead ends: 333290 [2020-10-13 13:40:12,482 INFO L226 Difference]: Without dead ends: 222980 [2020-10-13 13:40:12,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:40:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222980 states. [2020-10-13 13:40:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222980 to 206662. [2020-10-13 13:40:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206662 states. [2020-10-13 13:40:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206662 states to 206662 states and 306008 transitions. [2020-10-13 13:40:28,410 INFO L78 Accepts]: Start accepts. Automaton has 206662 states and 306008 transitions. Word has length 106 [2020-10-13 13:40:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:40:28,410 INFO L479 AbstractCegarLoop]: Abstraction has 206662 states and 306008 transitions. [2020-10-13 13:40:28,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:40:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 206662 states and 306008 transitions. [2020-10-13 13:40:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 13:40:28,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:40:28,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:40:28,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:40:28,412 INFO L427 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:40:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:40:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2127313091, now seen corresponding path program 1 times [2020-10-13 13:40:28,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:40:28,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917331673] [2020-10-13 13:40:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:40:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:28,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:28,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking...