/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:02:07,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:02:07,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:02:07,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:02:07,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:02:07,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:02:07,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:02:07,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:02:07,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:02:07,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:02:07,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:02:07,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:02:07,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:02:07,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:02:07,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:02:07,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:02:07,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:02:07,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:02:07,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:02:07,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:02:07,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:02:07,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:02:07,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:02:07,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:02:07,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:02:07,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:02:07,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:02:07,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:02:07,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:02:07,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:02:07,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:02:07,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:02:07,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:02:07,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:02:07,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:02:07,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:02:07,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:02:07,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:02:07,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:02:07,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:02:07,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:02:07,712 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 [2020-10-15 04:02:07,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:02:07,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:02:07,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:02:07,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:02:07,755 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:02:07,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:02:07,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:02:07,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:02:07,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:02:07,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:02:07,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:02:07,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:02:07,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:02:07,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:02:07,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:02:07,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:02:07,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:02:07,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:02:07,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:02:07,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:02:07,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:02:07,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:02:07,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:02:07,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:02:07,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:02:07,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:02:07,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:02:07,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:02:07,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:02:07,761 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:02:08,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:02:08,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:02:08,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:02:08,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:02:08,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:02:08,076 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:02:08,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab295d7d4/196dc72bc6c242cf9d5675321e7b7975/FLAG05cbcf51d [2020-10-15 04:02:08,755 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:02:08,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:02:08,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab295d7d4/196dc72bc6c242cf9d5675321e7b7975/FLAG05cbcf51d [2020-10-15 04:02:09,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab295d7d4/196dc72bc6c242cf9d5675321e7b7975 [2020-10-15 04:02:09,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:02:09,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:02:09,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:02:09,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:02:09,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:02:09,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24834011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09, skipping insertion in model container [2020-10-15 04:02:09,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:02:09,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:02:09,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:02:09,510 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:02:09,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:02:09,621 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:02:09,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09 WrapperNode [2020-10-15 04:02:09,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:02:09,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:02:09,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:02:09,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:02:09,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (1/1) ... [2020-10-15 04:02:09,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:02:09,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:02:09,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:02:09,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:02:09,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (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 [2020-10-15 04:02:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:02:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:02:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:02:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:02:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:02:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:02:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:02:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:02:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:02:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:02:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:02:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:02:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:02:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:02:10,600 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:02:10,601 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:02:10,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:02:10 BoogieIcfgContainer [2020-10-15 04:02:10,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:02:10,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:02:10,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:02:10,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:02:10,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:02:09" (1/3) ... [2020-10-15 04:02:10,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbe4bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:02:10, skipping insertion in model container [2020-10-15 04:02:10,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:02:09" (2/3) ... [2020-10-15 04:02:10,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbe4bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:02:10, skipping insertion in model container [2020-10-15 04:02:10,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:02:10" (3/3) ... [2020-10-15 04:02:10,617 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:02:10,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:02:10,637 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:02:10,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:02:10,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:02:10,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:02:10,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:02:10,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:02:10,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:02:10,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:02:10,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:02:10,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:02:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-15 04:02:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:02:10,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:10,716 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] [2020-10-15 04:02:10,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:10,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1725986399, now seen corresponding path program 1 times [2020-10-15 04:02:10,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:10,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365327912] [2020-10-15 04:02:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:13,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:13,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:02:13,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:02:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-10-15 04:02:13,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:13,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:02:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:02:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 04:02:13,875 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:13,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:13,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:13,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:02:13,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:13,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:13,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365327912] [2020-10-15 04:02:13,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:13,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:13,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368229975] [2020-10-15 04:02:13,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:13,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:14,000 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-10-15 04:02:14,450 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:15,966 INFO L93 Difference]: Finished difference Result 348 states and 578 transitions. [2020-10-15 04:02:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:15,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 04:02:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:15,984 INFO L225 Difference]: With dead ends: 348 [2020-10-15 04:02:15,984 INFO L226 Difference]: Without dead ends: 241 [2020-10-15 04:02:15,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-15 04:02:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 238. [2020-10-15 04:02:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 04:02:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 369 transitions. [2020-10-15 04:02:16,057 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 369 transitions. Word has length 66 [2020-10-15 04:02:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:16,058 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 369 transitions. [2020-10-15 04:02:16,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 369 transitions. [2020-10-15 04:02:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 04:02:16,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:16,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:02:16,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:02:16,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:16,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:16,068 INFO L82 PathProgramCache]: Analyzing trace with hash 166652608, now seen corresponding path program 1 times [2020-10-15 04:02:16,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:16,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340403834] [2020-10-15 04:02:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:20,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:02:20,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:02:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4131 [2020-10-15 04:02:20,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:02:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:20,605 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:20,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:20,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:02:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:20,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:20,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340403834] [2020-10-15 04:02:20,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:20,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:20,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289368809] [2020-10-15 04:02:20,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:20,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:20,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:20,665 INFO L87 Difference]: Start difference. First operand 238 states and 369 transitions. Second operand 5 states. [2020-10-15 04:02:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:22,064 INFO L93 Difference]: Finished difference Result 663 states and 1026 transitions. [2020-10-15 04:02:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:22,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 04:02:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:22,072 INFO L225 Difference]: With dead ends: 663 [2020-10-15 04:02:22,072 INFO L226 Difference]: Without dead ends: 454 [2020-10-15 04:02:22,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-15 04:02:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 452. [2020-10-15 04:02:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-15 04:02:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 698 transitions. [2020-10-15 04:02:22,134 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 698 transitions. Word has length 68 [2020-10-15 04:02:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:22,134 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 698 transitions. [2020-10-15 04:02:22,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 698 transitions. [2020-10-15 04:02:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:02:22,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:22,139 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] [2020-10-15 04:02:22,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:02:22,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1232335638, now seen corresponding path program 1 times [2020-10-15 04:02:22,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:22,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345050428] [2020-10-15 04:02:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:25,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:02:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3450 [2020-10-15 04:02:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:25,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:02:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:25,896 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:25,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:25,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:25,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:02:25,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:25,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:25,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345050428] [2020-10-15 04:02:25,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:25,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:25,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953785866] [2020-10-15 04:02:25,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:25,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:25,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:25,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:25,937 INFO L87 Difference]: Start difference. First operand 452 states and 698 transitions. Second operand 5 states. [2020-10-15 04:02:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:26,851 INFO L93 Difference]: Finished difference Result 1304 states and 2013 transitions. [2020-10-15 04:02:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:26,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:02:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:26,860 INFO L225 Difference]: With dead ends: 1304 [2020-10-15 04:02:26,861 INFO L226 Difference]: Without dead ends: 866 [2020-10-15 04:02:26,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-15 04:02:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2020-10-15 04:02:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-15 04:02:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1323 transitions. [2020-10-15 04:02:26,946 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1323 transitions. Word has length 69 [2020-10-15 04:02:26,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:26,948 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1323 transitions. [2020-10-15 04:02:26,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1323 transitions. [2020-10-15 04:02:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:02:26,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:26,954 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] [2020-10-15 04:02:26,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:02:26,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:26,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:26,956 INFO L82 PathProgramCache]: Analyzing trace with hash -250993752, now seen corresponding path program 1 times [2020-10-15 04:02:26,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:26,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449422116] [2020-10-15 04:02:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:31,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:31,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:02:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:02:31,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:32,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:02:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:02:32,274 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:32,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:32,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:32,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449422116] [2020-10-15 04:02:32,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:32,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:32,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352833429] [2020-10-15 04:02:32,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:32,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:32,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:32,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:32,320 INFO L87 Difference]: Start difference. First operand 864 states and 1323 transitions. Second operand 5 states. [2020-10-15 04:02:32,526 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:33,517 INFO L93 Difference]: Finished difference Result 1294 states and 1975 transitions. [2020-10-15 04:02:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:33,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:02:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:33,523 INFO L225 Difference]: With dead ends: 1294 [2020-10-15 04:02:33,523 INFO L226 Difference]: Without dead ends: 866 [2020-10-15 04:02:33,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:02:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-15 04:02:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2020-10-15 04:02:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-15 04:02:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1312 transitions. [2020-10-15 04:02:33,590 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1312 transitions. Word has length 70 [2020-10-15 04:02:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:33,591 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1312 transitions. [2020-10-15 04:02:33,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1312 transitions. [2020-10-15 04:02:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:02:33,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:33,594 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] [2020-10-15 04:02:33,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:02:33,594 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1984453697, now seen corresponding path program 1 times [2020-10-15 04:02:33,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:33,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331391610] [2020-10-15 04:02:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:36,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:36,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:36,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:02:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3274 [2020-10-15 04:02:36,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:36,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:02:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:02:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:37,147 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:37,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:37,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:02:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:37,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:37,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331391610] [2020-10-15 04:02:37,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:37,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:37,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652885099] [2020-10-15 04:02:37,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:37,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:37,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:37,200 INFO L87 Difference]: Start difference. First operand 864 states and 1312 transitions. Second operand 4 states. [2020-10-15 04:02:37,496 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:38,514 INFO L93 Difference]: Finished difference Result 2112 states and 3322 transitions. [2020-10-15 04:02:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:38,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-15 04:02:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:38,526 INFO L225 Difference]: With dead ends: 2112 [2020-10-15 04:02:38,527 INFO L226 Difference]: Without dead ends: 1458 [2020-10-15 04:02:38,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-10-15 04:02:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1448. [2020-10-15 04:02:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-10-15 04:02:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2244 transitions. [2020-10-15 04:02:38,671 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2244 transitions. Word has length 70 [2020-10-15 04:02:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:38,677 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 2244 transitions. [2020-10-15 04:02:38,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2244 transitions. [2020-10-15 04:02:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:02:38,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:38,680 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] [2020-10-15 04:02:38,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:02:38,681 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:38,681 INFO L82 PathProgramCache]: Analyzing trace with hash -693462430, now seen corresponding path program 1 times [2020-10-15 04:02:38,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:38,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312631622] [2020-10-15 04:02:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:02:43,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:02:43,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:43,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:43,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:43,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:43,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 04:02:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:02:43,997 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:43,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:44,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:44,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:44,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:44,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:02:44,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:44,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:44,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312631622] [2020-10-15 04:02:44,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:44,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:44,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722384146] [2020-10-15 04:02:44,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:44,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:44,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:44,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:44,044 INFO L87 Difference]: Start difference. First operand 1448 states and 2244 transitions. Second operand 5 states. [2020-10-15 04:02:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:45,132 INFO L93 Difference]: Finished difference Result 3985 states and 6228 transitions. [2020-10-15 04:02:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:45,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:02:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:45,148 INFO L225 Difference]: With dead ends: 3985 [2020-10-15 04:02:45,148 INFO L226 Difference]: Without dead ends: 2747 [2020-10-15 04:02:45,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2020-10-15 04:02:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2745. [2020-10-15 04:02:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2020-10-15 04:02:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4210 transitions. [2020-10-15 04:02:45,385 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4210 transitions. Word has length 72 [2020-10-15 04:02:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:45,386 INFO L479 AbstractCegarLoop]: Abstraction has 2745 states and 4210 transitions. [2020-10-15 04:02:45,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4210 transitions. [2020-10-15 04:02:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:02:45,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:45,393 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] [2020-10-15 04:02:45,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:02:45,394 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 457469818, now seen corresponding path program 1 times [2020-10-15 04:02:45,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:45,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125902061] [2020-10-15 04:02:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:45,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:46,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:50,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:50,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:02:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:02:50,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:50,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:50,686 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:50,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:50,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:50,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:02:50,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:50,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:50,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125902061] [2020-10-15 04:02:50,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:50,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:50,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153882228] [2020-10-15 04:02:50,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:50,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:50,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:50,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:50,726 INFO L87 Difference]: Start difference. First operand 2745 states and 4210 transitions. Second operand 5 states. [2020-10-15 04:02:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:52,177 INFO L93 Difference]: Finished difference Result 7644 states and 11835 transitions. [2020-10-15 04:02:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:52,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:02:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:52,216 INFO L225 Difference]: With dead ends: 7644 [2020-10-15 04:02:52,216 INFO L226 Difference]: Without dead ends: 5266 [2020-10-15 04:02:52,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:02:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2020-10-15 04:02:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 5264. [2020-10-15 04:02:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2020-10-15 04:02:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 8009 transitions. [2020-10-15 04:02:52,819 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 8009 transitions. Word has length 73 [2020-10-15 04:02:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:52,819 INFO L479 AbstractCegarLoop]: Abstraction has 5264 states and 8009 transitions. [2020-10-15 04:02:52,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 8009 transitions. [2020-10-15 04:02:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:02:52,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:52,834 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] [2020-10-15 04:02:52,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:02:52,834 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:52,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1189010898, now seen corresponding path program 1 times [2020-10-15 04:02:52,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:52,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303819922] [2020-10-15 04:02:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:57,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:57,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:02:57,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:02:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:02:57,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:57,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:02:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:58,086 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:02:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:58,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:58,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:58,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:58,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:58,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303819922] [2020-10-15 04:02:58,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:58,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:58,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638287638] [2020-10-15 04:02:58,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:58,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:58,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:58,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:58,128 INFO L87 Difference]: Start difference. First operand 5264 states and 8009 transitions. Second operand 5 states. [2020-10-15 04:02:58,341 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:02:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:59,882 INFO L93 Difference]: Finished difference Result 9911 states and 14966 transitions. [2020-10-15 04:02:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:59,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 04:02:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:59,916 INFO L225 Difference]: With dead ends: 9911 [2020-10-15 04:02:59,916 INFO L226 Difference]: Without dead ends: 6956 [2020-10-15 04:02:59,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:02:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2020-10-15 04:03:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 6954. [2020-10-15 04:03:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6954 states. [2020-10-15 04:03:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 10384 transitions. [2020-10-15 04:03:00,556 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 10384 transitions. Word has length 74 [2020-10-15 04:03:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:00,557 INFO L479 AbstractCegarLoop]: Abstraction has 6954 states and 10384 transitions. [2020-10-15 04:03:00,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 10384 transitions. [2020-10-15 04:03:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:03:00,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:00,567 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] [2020-10-15 04:03:00,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:03:00,567 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1329423587, now seen corresponding path program 1 times [2020-10-15 04:03:00,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:00,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031068274] [2020-10-15 04:03:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:03:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:05,783 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:05,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:05,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031068274] [2020-10-15 04:03:05,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:05,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:03:05,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798191883] [2020-10-15 04:03:05,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:03:05,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:05,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:03:05,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:03:05,813 INFO L87 Difference]: Start difference. First operand 6954 states and 10384 transitions. Second operand 4 states. [2020-10-15 04:03:06,021 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:03:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:07,217 INFO L93 Difference]: Finished difference Result 16682 states and 25574 transitions. [2020-10-15 04:03:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:03:07,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-15 04:03:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:07,273 INFO L225 Difference]: With dead ends: 16682 [2020-10-15 04:03:07,273 INFO L226 Difference]: Without dead ends: 11084 [2020-10-15 04:03:07,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2020-10-15 04:03:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 11018. [2020-10-15 04:03:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11018 states. [2020-10-15 04:03:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11018 states to 11018 states and 16640 transitions. [2020-10-15 04:03:08,216 INFO L78 Accepts]: Start accepts. Automaton has 11018 states and 16640 transitions. Word has length 74 [2020-10-15 04:03:08,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:08,217 INFO L479 AbstractCegarLoop]: Abstraction has 11018 states and 16640 transitions. [2020-10-15 04:03:08,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:03:08,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11018 states and 16640 transitions. [2020-10-15 04:03:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:03:08,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:08,228 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] [2020-10-15 04:03:08,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:03:08,229 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:08,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1133817988, now seen corresponding path program 1 times [2020-10-15 04:03:08,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:08,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787477968] [2020-10-15 04:03:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:13,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 04:03:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:03:13,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:13,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:03:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:03:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:13,495 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:13,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:13,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:13,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:13,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:13,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787477968] [2020-10-15 04:03:13,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:13,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:13,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712990512] [2020-10-15 04:03:13,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:13,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:13,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:13,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:13,533 INFO L87 Difference]: Start difference. First operand 11018 states and 16640 transitions. Second operand 5 states. [2020-10-15 04:03:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:15,816 INFO L93 Difference]: Finished difference Result 30725 states and 46679 transitions. [2020-10-15 04:03:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:03:15,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-15 04:03:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:15,864 INFO L225 Difference]: With dead ends: 30725 [2020-10-15 04:03:15,865 INFO L226 Difference]: Without dead ends: 21063 [2020-10-15 04:03:15,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:03:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21063 states. [2020-10-15 04:03:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21063 to 21061. [2020-10-15 04:03:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21061 states. [2020-10-15 04:03:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21061 states to 21061 states and 31457 transitions. [2020-10-15 04:03:18,071 INFO L78 Accepts]: Start accepts. Automaton has 21061 states and 31457 transitions. Word has length 76 [2020-10-15 04:03:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:18,071 INFO L479 AbstractCegarLoop]: Abstraction has 21061 states and 31457 transitions. [2020-10-15 04:03:18,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 21061 states and 31457 transitions. [2020-10-15 04:03:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:03:18,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:18,090 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] [2020-10-15 04:03:18,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:03:18,091 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:18,091 INFO L82 PathProgramCache]: Analyzing trace with hash -185944817, now seen corresponding path program 1 times [2020-10-15 04:03:18,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:18,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705935425] [2020-10-15 04:03:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:23,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:03:23,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:23,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:03:23,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:23,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:03:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:03:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:23,310 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:23,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:23,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:23,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:03:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:23,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705935425] [2020-10-15 04:03:23,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:23,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:23,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515707361] [2020-10-15 04:03:23,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:23,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:23,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:23,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:23,346 INFO L87 Difference]: Start difference. First operand 21061 states and 31457 transitions. Second operand 5 states. [2020-10-15 04:03:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:26,724 INFO L93 Difference]: Finished difference Result 60978 states and 90917 transitions. [2020-10-15 04:03:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:03:26,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-15 04:03:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:26,821 INFO L225 Difference]: With dead ends: 60978 [2020-10-15 04:03:26,822 INFO L226 Difference]: Without dead ends: 40277 [2020-10-15 04:03:26,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:03:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40277 states. [2020-10-15 04:03:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40277 to 40275. [2020-10-15 04:03:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40275 states. [2020-10-15 04:03:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40275 states to 40275 states and 59408 transitions. [2020-10-15 04:03:30,021 INFO L78 Accepts]: Start accepts. Automaton has 40275 states and 59408 transitions. Word has length 77 [2020-10-15 04:03:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:30,021 INFO L479 AbstractCegarLoop]: Abstraction has 40275 states and 59408 transitions. [2020-10-15 04:03:30,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 40275 states and 59408 transitions. [2020-10-15 04:03:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:30,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:30,051 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] [2020-10-15 04:03:30,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:03:30,051 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:30,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:30,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1567013615, now seen corresponding path program 1 times [2020-10-15 04:03:30,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:30,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229125888] [2020-10-15 04:03:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:30,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:35,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:35,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:35,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:35,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:03:35,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:35,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:35,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:03:35,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:03:35,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:03:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:03:35,294 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:35,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:35,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:03:35,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:35,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:35,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229125888] [2020-10-15 04:03:35,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:35,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:03:35,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081181962] [2020-10-15 04:03:35,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:03:35,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:35,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:03:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:03:35,321 INFO L87 Difference]: Start difference. First operand 40275 states and 59408 transitions. Second operand 6 states. [2020-10-15 04:03:35,545 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 04:03:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:47,032 INFO L93 Difference]: Finished difference Result 167039 states and 254998 transitions. [2020-10-15 04:03:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:03:47,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-15 04:03:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:47,304 INFO L225 Difference]: With dead ends: 167039 [2020-10-15 04:03:47,305 INFO L226 Difference]: Without dead ends: 131837 [2020-10-15 04:03:47,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:03:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131837 states. [2020-10-15 04:03:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131837 to 71923. [2020-10-15 04:03:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71923 states. [2020-10-15 04:03:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71923 states to 71923 states and 107120 transitions. [2020-10-15 04:03:53,255 INFO L78 Accepts]: Start accepts. Automaton has 71923 states and 107120 transitions. Word has length 78 [2020-10-15 04:03:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:53,255 INFO L479 AbstractCegarLoop]: Abstraction has 71923 states and 107120 transitions. [2020-10-15 04:03:53,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:03:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 71923 states and 107120 transitions. [2020-10-15 04:03:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:03:53,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:53,282 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] [2020-10-15 04:03:53,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:03:53,282 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:53,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:53,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1394392246, now seen corresponding path program 1 times [2020-10-15 04:03:53,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:53,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545146621] [2020-10-15 04:03:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:53,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 04:03:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:03:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:03:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:58,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:03:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:03:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:58,487 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:03:58,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:58,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:58,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:03:58,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545146621] [2020-10-15 04:03:58,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:58,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:58,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532337088] [2020-10-15 04:03:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:58,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:58,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:58,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:58,515 INFO L87 Difference]: Start difference. First operand 71923 states and 107120 transitions. Second operand 5 states. [2020-10-15 04:03:58,720 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:04:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:10,638 INFO L93 Difference]: Finished difference Result 207385 states and 315283 transitions. [2020-10-15 04:04:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:04:10,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-15 04:04:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:10,842 INFO L225 Difference]: With dead ends: 207385 [2020-10-15 04:04:10,842 INFO L226 Difference]: Without dead ends: 141015 [2020-10-15 04:04:10,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:04:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141015 states. [2020-10-15 04:04:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141015 to 106195. [2020-10-15 04:04:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106195 states. [2020-10-15 04:04:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106195 states to 106195 states and 159120 transitions. [2020-10-15 04:04:21,590 INFO L78 Accepts]: Start accepts. Automaton has 106195 states and 159120 transitions. Word has length 79 [2020-10-15 04:04:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:21,591 INFO L479 AbstractCegarLoop]: Abstraction has 106195 states and 159120 transitions. [2020-10-15 04:04:21,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 106195 states and 159120 transitions. [2020-10-15 04:04:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:04:21,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:21,624 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] [2020-10-15 04:04:21,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:04:21,625 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:21,625 INFO L82 PathProgramCache]: Analyzing trace with hash -333539080, now seen corresponding path program 1 times [2020-10-15 04:04:21,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:21,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189757565] [2020-10-15 04:04:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:26,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:04:26,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:04:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:04:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:26,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:04:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:04:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:26,836 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:26,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:26,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189757565] [2020-10-15 04:04:26,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:26,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:26,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018875635] [2020-10-15 04:04:26,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:26,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:26,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:26,858 INFO L87 Difference]: Start difference. First operand 106195 states and 159120 transitions. Second operand 5 states. [2020-10-15 04:04:27,058 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:04:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:43,136 INFO L93 Difference]: Finished difference Result 293529 states and 444691 transitions. [2020-10-15 04:04:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:04:43,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:04:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:43,429 INFO L225 Difference]: With dead ends: 293529 [2020-10-15 04:04:43,430 INFO L226 Difference]: Without dead ends: 193367 [2020-10-15 04:04:43,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:04:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193367 states. [2020-10-15 04:04:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193367 to 149139. [2020-10-15 04:04:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149139 states. [2020-10-15 04:04:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149139 states to 149139 states and 223120 transitions. [2020-10-15 04:04:59,561 INFO L78 Accepts]: Start accepts. Automaton has 149139 states and 223120 transitions. Word has length 80 [2020-10-15 04:04:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:59,561 INFO L479 AbstractCegarLoop]: Abstraction has 149139 states and 223120 transitions. [2020-10-15 04:04:59,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 149139 states and 223120 transitions. [2020-10-15 04:04:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:04:59,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:59,607 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] [2020-10-15 04:04:59,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:04:59,608 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 655939681, now seen corresponding path program 1 times [2020-10-15 04:04:59,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:59,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643291087] [2020-10-15 04:04:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:06,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6499 [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:05:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:05:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:06,339 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:06,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:06,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:06,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:06,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643291087] [2020-10-15 04:05:06,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:06,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:06,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893326548] [2020-10-15 04:05:06,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:06,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:06,363 INFO L87 Difference]: Start difference. First operand 149139 states and 223120 transitions. Second operand 5 states. [2020-10-15 04:05:06,585 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 04:05:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:23,960 INFO L93 Difference]: Finished difference Result 286873 states and 431699 transitions. [2020-10-15 04:05:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:05:23,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:05:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:24,244 INFO L225 Difference]: With dead ends: 286873 [2020-10-15 04:05:24,245 INFO L226 Difference]: Without dead ends: 192727 [2020-10-15 04:05:24,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:05:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192727 states. [2020-10-15 04:05:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192727 to 192083. [2020-10-15 04:05:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192083 states. [2020-10-15 04:05:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192083 states to 192083 states and 286032 transitions. [2020-10-15 04:05:45,341 INFO L78 Accepts]: Start accepts. Automaton has 192083 states and 286032 transitions. Word has length 80 [2020-10-15 04:05:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:45,342 INFO L479 AbstractCegarLoop]: Abstraction has 192083 states and 286032 transitions. [2020-10-15 04:05:45,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:45,342 INFO L276 IsEmpty]: Start isEmpty. Operand 192083 states and 286032 transitions. [2020-10-15 04:05:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:05:45,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:45,369 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] [2020-10-15 04:05:45,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:05:45,370 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1121986609, now seen corresponding path program 1 times [2020-10-15 04:05:45,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:45,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192874275] [2020-10-15 04:05:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:45,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:50,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:05:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:50,609 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:50,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:50,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:50,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192874275] [2020-10-15 04:05:50,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:50,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:50,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521925927] [2020-10-15 04:05:50,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:50,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:50,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:50,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:50,635 INFO L87 Difference]: Start difference. First operand 192083 states and 286032 transitions. Second operand 5 states. [2020-10-15 04:05:50,862 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 172