/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:30:24,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:30:24,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:30:24,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:30:24,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:30:24,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:30:24,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:30:24,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:30:24,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:30:24,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:30:24,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:30:24,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:30:24,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:30:24,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:30:24,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:30:24,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:30:24,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:30:24,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:30:24,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:30:24,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:30:24,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:30:24,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:30:24,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:30:24,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:30:24,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:30:24,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:30:24,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:30:24,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:30:24,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:30:24,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:30:24,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:30:24,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:30:24,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:30:24,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:30:24,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:30:24,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:30:24,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:30:24,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:30:24,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:30:24,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:30:24,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:30:24,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:30:24,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:30:24,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:30:24,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:30:24,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:30:24,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:30:24,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:30:24,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:30:24,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:30:24,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:30:24,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:30:24,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:30:24,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:30:24,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:30:24,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:30:24,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:30:24,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:30:24,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:30:24,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:30:24,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:30:24,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:30:24,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:30:24,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:30:24,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:30:24,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:30:24,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:30:24,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:30:24,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:30:24,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:30:24,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:30:24,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:30:25,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:30:25,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:30:25,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:30:25,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:30:25,087 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:30:25,087 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-13 14:30:25,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b7c287a0/d4bc6d1c75c44028a163fae7c105d018/FLAG3723785f2 [2020-10-13 14:30:25,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:30:25,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-13 14:30:25,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b7c287a0/d4bc6d1c75c44028a163fae7c105d018/FLAG3723785f2 [2020-10-13 14:30:26,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b7c287a0/d4bc6d1c75c44028a163fae7c105d018 [2020-10-13 14:30:26,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:30:26,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:30:26,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:30:26,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:30:26,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:30:26,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c46eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26, skipping insertion in model container [2020-10-13 14:30:26,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:30:26,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:30:26,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:30:26,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:30:26,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:30:26,779 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:30:26,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26 WrapperNode [2020-10-13 14:30:26,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:30:26,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:30:26,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:30:26,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:30:26,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... [2020-10-13 14:30:26,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:30:26,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:30:26,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:30:26,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:30:26,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:30:26,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:30:26,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:30:26,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:30:26,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:30:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:30:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:30:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:30:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:30:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:30:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:30:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:30:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:30:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:30:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:30:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:30:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:30:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:30:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:30:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:30:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-13 14:30:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:30:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:30:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:30:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:30:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:30:28,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:30:28,005 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:30:28,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:30:28 BoogieIcfgContainer [2020-10-13 14:30:28,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:30:28,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:30:28,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:30:28,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:30:28,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:30:26" (1/3) ... [2020-10-13 14:30:28,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485f7b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:30:28, skipping insertion in model container [2020-10-13 14:30:28,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:30:26" (2/3) ... [2020-10-13 14:30:28,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485f7b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:30:28, skipping insertion in model container [2020-10-13 14:30:28,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:30:28" (3/3) ... [2020-10-13 14:30:28,019 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-13 14:30:28,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:30:28,038 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:30:28,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:30:28,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:30:28,079 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:30:28,079 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:30:28,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:30:28,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:30:28,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:30:28,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:30:28,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:30:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2020-10-13 14:30:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 14:30:28,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:28,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:28,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:28,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1609228235, now seen corresponding path program 1 times [2020-10-13 14:30:28,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:28,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184941177] [2020-10-13 14:30:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:29,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:33,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 14:30:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:30:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:30:33,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:30:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:30:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:30:34,092 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:30:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:34,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:34,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:30:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:34,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184941177] [2020-10-13 14:30:34,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:34,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:34,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806934808] [2020-10-13 14:30:34,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:34,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:34,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:34,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:34,213 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 7 states. [2020-10-13 14:30:34,643 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:30:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:37,487 INFO L93 Difference]: Finished difference Result 1175 states and 1916 transitions. [2020-10-13 14:30:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:37,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-13 14:30:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:37,540 INFO L225 Difference]: With dead ends: 1175 [2020-10-13 14:30:37,540 INFO L226 Difference]: Without dead ends: 986 [2020-10-13 14:30:37,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-10-13 14:30:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 491. [2020-10-13 14:30:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-13 14:30:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 715 transitions. [2020-10-13 14:30:37,689 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 715 transitions. Word has length 129 [2020-10-13 14:30:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:37,690 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 715 transitions. [2020-10-13 14:30:37,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 715 transitions. [2020-10-13 14:30:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 14:30:37,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:37,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:37,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:30:37,705 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:37,705 INFO L82 PathProgramCache]: Analyzing trace with hash 778381008, now seen corresponding path program 1 times [2020-10-13 14:30:37,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:37,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850134513] [2020-10-13 14:30:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:42,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 14:30:42,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:30:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:30:42,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 14:30:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:30:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:43,086 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:30:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:30:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:43,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:43,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850134513] [2020-10-13 14:30:43,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:43,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:43,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668255139] [2020-10-13 14:30:43,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:43,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:43,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:43,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:43,190 INFO L87 Difference]: Start difference. First operand 491 states and 715 transitions. Second operand 7 states. [2020-10-13 14:30:43,475 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:30:45,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:45,742 INFO L93 Difference]: Finished difference Result 2840 states and 4429 transitions. [2020-10-13 14:30:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:45,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-13 14:30:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:45,768 INFO L225 Difference]: With dead ends: 2840 [2020-10-13 14:30:45,768 INFO L226 Difference]: Without dead ends: 2468 [2020-10-13 14:30:45,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2020-10-13 14:30:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1129. [2020-10-13 14:30:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-13 14:30:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1716 transitions. [2020-10-13 14:30:45,879 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1716 transitions. Word has length 130 [2020-10-13 14:30:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:45,881 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1716 transitions. [2020-10-13 14:30:45,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1716 transitions. [2020-10-13 14:30:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:30:45,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:45,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:45,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:30:45,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:45,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1013431253, now seen corresponding path program 1 times [2020-10-13 14:30:45,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:45,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114567479] [2020-10-13 14:30:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:30:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:30:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:30:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:30:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:30:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:30:51,254 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:30:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:51,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:51,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:51,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:51,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 14:30:51,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:30:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:51,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114567479] [2020-10-13 14:30:51,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:51,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:51,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790549970] [2020-10-13 14:30:51,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:51,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:51,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:51,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:51,366 INFO L87 Difference]: Start difference. First operand 1129 states and 1716 transitions. Second operand 7 states. [2020-10-13 14:30:51,770 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:30:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:53,669 INFO L93 Difference]: Finished difference Result 8083 states and 12695 transitions. [2020-10-13 14:30:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:53,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-13 14:30:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:53,708 INFO L225 Difference]: With dead ends: 8083 [2020-10-13 14:30:53,709 INFO L226 Difference]: Without dead ends: 7057 [2020-10-13 14:30:53,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2020-10-13 14:30:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 2999. [2020-10-13 14:30:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-13 14:30:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4643 transitions. [2020-10-13 14:30:53,891 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4643 transitions. Word has length 131 [2020-10-13 14:30:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:53,892 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 4643 transitions. [2020-10-13 14:30:53,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4643 transitions. [2020-10-13 14:30:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 14:30:53,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:53,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:53,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:30:53,897 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1252887871, now seen corresponding path program 1 times [2020-10-13 14:30:53,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:53,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943800597] [2020-10-13 14:30:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:58,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:58,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 14:30:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:30:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:30:58,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:30:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:30:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:59,316 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:30:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:59,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:30:59,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:30:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:59,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943800597] [2020-10-13 14:30:59,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:59,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:59,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968642977] [2020-10-13 14:30:59,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:59,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:59,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:59,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:59,420 INFO L87 Difference]: Start difference. First operand 2999 states and 4643 transitions. Second operand 7 states. [2020-10-13 14:30:59,827 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:31:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:02,059 INFO L93 Difference]: Finished difference Result 14445 states and 22727 transitions. [2020-10-13 14:31:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:02,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-13 14:31:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:02,117 INFO L225 Difference]: With dead ends: 14445 [2020-10-13 14:31:02,118 INFO L226 Difference]: Without dead ends: 12705 [2020-10-13 14:31:02,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12705 states. [2020-10-13 14:31:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12705 to 3920. [2020-10-13 14:31:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2020-10-13 14:31:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 6060 transitions. [2020-10-13 14:31:02,434 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 6060 transitions. Word has length 132 [2020-10-13 14:31:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:02,436 INFO L479 AbstractCegarLoop]: Abstraction has 3920 states and 6060 transitions. [2020-10-13 14:31:02,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 6060 transitions. [2020-10-13 14:31:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 14:31:02,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:02,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:02,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:31:02,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:02,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2072124432, now seen corresponding path program 1 times [2020-10-13 14:31:02,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:02,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314275787] [2020-10-13 14:31:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:07,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:07,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 14:31:07,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:31:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:31:07,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:31:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 14:31:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:07,783 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:31:07,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:31:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:07,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314275787] [2020-10-13 14:31:07,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:07,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:07,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225025656] [2020-10-13 14:31:07,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:07,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:07,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:07,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:07,835 INFO L87 Difference]: Start difference. First operand 3920 states and 6060 transitions. Second operand 7 states. [2020-10-13 14:31:08,117 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:31:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:10,552 INFO L93 Difference]: Finished difference Result 31763 states and 49718 transitions. [2020-10-13 14:31:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:10,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-13 14:31:10,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:10,623 INFO L225 Difference]: With dead ends: 31763 [2020-10-13 14:31:10,623 INFO L226 Difference]: Without dead ends: 27919 [2020-10-13 14:31:10,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27919 states. [2020-10-13 14:31:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27919 to 11339. [2020-10-13 14:31:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11339 states. [2020-10-13 14:31:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11339 states to 11339 states and 17604 transitions. [2020-10-13 14:31:11,626 INFO L78 Accepts]: Start accepts. Automaton has 11339 states and 17604 transitions. Word has length 132 [2020-10-13 14:31:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:11,627 INFO L479 AbstractCegarLoop]: Abstraction has 11339 states and 17604 transitions. [2020-10-13 14:31:11,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11339 states and 17604 transitions. [2020-10-13 14:31:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:31:11,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:11,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:11,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:31:11,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash 660687804, now seen corresponding path program 1 times [2020-10-13 14:31:11,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:11,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660175373] [2020-10-13 14:31:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:31:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 14:31:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:16,957 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:31:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:16,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:31:16,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:17,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660175373] [2020-10-13 14:31:17,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:17,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:17,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362227246] [2020-10-13 14:31:17,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:17,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:17,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:17,012 INFO L87 Difference]: Start difference. First operand 11339 states and 17604 transitions. Second operand 7 states. [2020-10-13 14:31:17,304 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:31:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:20,217 INFO L93 Difference]: Finished difference Result 43998 states and 68831 transitions. [2020-10-13 14:31:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:20,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-13 14:31:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:20,278 INFO L225 Difference]: With dead ends: 43998 [2020-10-13 14:31:20,279 INFO L226 Difference]: Without dead ends: 34298 [2020-10-13 14:31:20,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34298 states. [2020-10-13 14:31:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34298 to 11043. [2020-10-13 14:31:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11043 states. [2020-10-13 14:31:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 17148 transitions. [2020-10-13 14:31:21,826 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 17148 transitions. Word has length 133 [2020-10-13 14:31:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:21,826 INFO L479 AbstractCegarLoop]: Abstraction has 11043 states and 17148 transitions. [2020-10-13 14:31:21,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 17148 transitions. [2020-10-13 14:31:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:31:21,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:21,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:21,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:31:21,836 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash -754988245, now seen corresponding path program 1 times [2020-10-13 14:31:21,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:21,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115136529] [2020-10-13 14:31:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:23,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:26,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:31:26,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:31:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:31:26,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:31:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:31:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:27,157 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:31:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:27,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:27,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:31:27,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:27,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:27,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115136529] [2020-10-13 14:31:27,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:27,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:27,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473001065] [2020-10-13 14:31:27,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:27,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:27,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:27,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:27,208 INFO L87 Difference]: Start difference. First operand 11043 states and 17148 transitions. Second operand 7 states. [2020-10-13 14:31:27,504 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:31:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:31,642 INFO L93 Difference]: Finished difference Result 63037 states and 98639 transitions. [2020-10-13 14:31:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:31,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-13 14:31:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:31,742 INFO L225 Difference]: With dead ends: 63037 [2020-10-13 14:31:31,742 INFO L226 Difference]: Without dead ends: 56423 [2020-10-13 14:31:31,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56423 states. [2020-10-13 14:31:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56423 to 14694. [2020-10-13 14:31:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14694 states. [2020-10-13 14:31:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14694 states to 14694 states and 22730 transitions. [2020-10-13 14:31:32,882 INFO L78 Accepts]: Start accepts. Automaton has 14694 states and 22730 transitions. Word has length 133 [2020-10-13 14:31:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:32,882 INFO L479 AbstractCegarLoop]: Abstraction has 14694 states and 22730 transitions. [2020-10-13 14:31:32,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 14694 states and 22730 transitions. [2020-10-13 14:31:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:31:32,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:32,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:32,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:31:32,895 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:32,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1172295268, now seen corresponding path program 1 times [2020-10-13 14:31:32,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:32,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695000553] [2020-10-13 14:31:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:37,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:31:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:38,308 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:31:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:38,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:31:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:31:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:38,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695000553] [2020-10-13 14:31:38,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:38,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:38,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948920582] [2020-10-13 14:31:38,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:38,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:38,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:38,394 INFO L87 Difference]: Start difference. First operand 14694 states and 22730 transitions. Second operand 7 states. [2020-10-13 14:31:38,681 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:31:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:44,059 INFO L93 Difference]: Finished difference Result 63756 states and 99312 transitions. [2020-10-13 14:31:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:44,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-13 14:31:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:44,140 INFO L225 Difference]: With dead ends: 63756 [2020-10-13 14:31:44,140 INFO L226 Difference]: Without dead ends: 54873 [2020-10-13 14:31:44,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54873 states. [2020-10-13 14:31:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54873 to 19251. [2020-10-13 14:31:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19251 states. [2020-10-13 14:31:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19251 states to 19251 states and 29834 transitions. [2020-10-13 14:31:45,524 INFO L78 Accepts]: Start accepts. Automaton has 19251 states and 29834 transitions. Word has length 133 [2020-10-13 14:31:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:45,524 INFO L479 AbstractCegarLoop]: Abstraction has 19251 states and 29834 transitions. [2020-10-13 14:31:45,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 19251 states and 29834 transitions. [2020-10-13 14:31:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:31:45,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:45,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:45,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:31:45,542 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash -438933857, now seen corresponding path program 1 times [2020-10-13 14:31:45,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:45,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39984522] [2020-10-13 14:31:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:47,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:50,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:50,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:31:50,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:31:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-13 14:31:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:31:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:31:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 14:31:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:51,005 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:31:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:51,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:51,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:51,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:51,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:31:51,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:31:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:31:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:51,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39984522] [2020-10-13 14:31:51,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:51,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:31:51,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538551583] [2020-10-13 14:31:51,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:31:51,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:51,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:31:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:31:51,060 INFO L87 Difference]: Start difference. First operand 19251 states and 29834 transitions. Second operand 6 states. [2020-10-13 14:31:51,356 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-13 14:31:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:54,645 INFO L93 Difference]: Finished difference Result 44457 states and 69041 transitions. [2020-10-13 14:31:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:31:54,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-13 14:31:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:54,676 INFO L225 Difference]: With dead ends: 44457 [2020-10-13 14:31:54,676 INFO L226 Difference]: Without dead ends: 31774 [2020-10-13 14:31:54,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:31:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31774 states. [2020-10-13 14:31:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31774 to 25542. [2020-10-13 14:31:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25542 states. [2020-10-13 14:31:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25542 states to 25542 states and 39494 transitions. [2020-10-13 14:31:56,464 INFO L78 Accepts]: Start accepts. Automaton has 25542 states and 39494 transitions. Word has length 134 [2020-10-13 14:31:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:56,464 INFO L479 AbstractCegarLoop]: Abstraction has 25542 states and 39494 transitions. [2020-10-13 14:31:56,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:31:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 25542 states and 39494 transitions. [2020-10-13 14:31:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:31:56,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:56,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:56,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:31:56,479 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:56,480 INFO L82 PathProgramCache]: Analyzing trace with hash -848701584, now seen corresponding path program 1 times [2020-10-13 14:31:56,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:56,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484591984] [2020-10-13 14:31:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 14:32:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:01,803 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:32:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:01,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:01,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484591984] [2020-10-13 14:32:01,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:01,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:01,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609875014] [2020-10-13 14:32:01,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:01,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:01,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:01,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:01,839 INFO L87 Difference]: Start difference. First operand 25542 states and 39494 transitions. Second operand 7 states. [2020-10-13 14:32:02,125 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:32:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:09,167 INFO L93 Difference]: Finished difference Result 86366 states and 133966 transitions. [2020-10-13 14:32:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:09,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:32:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:09,240 INFO L225 Difference]: With dead ends: 86366 [2020-10-13 14:32:09,241 INFO L226 Difference]: Without dead ends: 69398 [2020-10-13 14:32:09,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69398 states. [2020-10-13 14:32:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69398 to 25208. [2020-10-13 14:32:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25208 states. [2020-10-13 14:32:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25208 states to 25208 states and 38984 transitions. [2020-10-13 14:32:11,449 INFO L78 Accepts]: Start accepts. Automaton has 25208 states and 38984 transitions. Word has length 134 [2020-10-13 14:32:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:11,449 INFO L479 AbstractCegarLoop]: Abstraction has 25208 states and 38984 transitions. [2020-10-13 14:32:11,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 25208 states and 38984 transitions. [2020-10-13 14:32:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:32:11,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:11,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:11,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:32:11,459 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:11,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2030589663, now seen corresponding path program 1 times [2020-10-13 14:32:11,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:11,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582247148] [2020-10-13 14:32:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:11,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:16,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:16,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:32:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:32:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:32:16,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:32:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:32:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:16,784 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:32:16,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:16,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:16,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:16,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:32:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:16,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582247148] [2020-10-13 14:32:16,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:16,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:16,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047295228] [2020-10-13 14:32:16,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:16,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:16,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:16,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:16,823 INFO L87 Difference]: Start difference. First operand 25208 states and 38984 transitions. Second operand 7 states. [2020-10-13 14:32:17,113 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:32:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:24,890 INFO L93 Difference]: Finished difference Result 85936 states and 133288 transitions. [2020-10-13 14:32:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:24,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:32:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:24,967 INFO L225 Difference]: With dead ends: 85936 [2020-10-13 14:32:24,967 INFO L226 Difference]: Without dead ends: 68992 [2020-10-13 14:32:24,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68992 states. [2020-10-13 14:32:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68992 to 24898. [2020-10-13 14:32:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24898 states. [2020-10-13 14:32:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 38498 transitions. [2020-10-13 14:32:27,235 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 38498 transitions. Word has length 134 [2020-10-13 14:32:27,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:27,235 INFO L479 AbstractCegarLoop]: Abstraction has 24898 states and 38498 transitions. [2020-10-13 14:32:27,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 38498 transitions. [2020-10-13 14:32:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:32:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:27,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:27,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:32:27,244 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2102570239, now seen corresponding path program 1 times [2020-10-13 14:32:27,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:27,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37740702] [2020-10-13 14:32:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:32,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:32:32,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:32:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:32:32,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:32:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:32:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:32,570 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:32:32,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:32,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:32,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:32,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:32:32,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:32,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37740702] [2020-10-13 14:32:32,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:32,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:32,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697750230] [2020-10-13 14:32:32,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:32,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:32,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:32,612 INFO L87 Difference]: Start difference. First operand 24898 states and 38498 transitions. Second operand 7 states. [2020-10-13 14:32:32,904 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:32:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:41,364 INFO L93 Difference]: Finished difference Result 84642 states and 131274 transitions. [2020-10-13 14:32:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:41,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:32:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:41,435 INFO L225 Difference]: With dead ends: 84642 [2020-10-13 14:32:41,436 INFO L226 Difference]: Without dead ends: 67810 [2020-10-13 14:32:41,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67810 states. [2020-10-13 14:32:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67810 to 24720. [2020-10-13 14:32:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24720 states. [2020-10-13 14:32:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24720 states to 24720 states and 38228 transitions. [2020-10-13 14:32:43,652 INFO L78 Accepts]: Start accepts. Automaton has 24720 states and 38228 transitions. Word has length 134 [2020-10-13 14:32:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:43,653 INFO L479 AbstractCegarLoop]: Abstraction has 24720 states and 38228 transitions. [2020-10-13 14:32:43,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 24720 states and 38228 transitions. [2020-10-13 14:32:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:32:43,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:43,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:43,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:32:43,662 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1304572383, now seen corresponding path program 1 times [2020-10-13 14:32:43,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:43,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880638670] [2020-10-13 14:32:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:48,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:48,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:32:48,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:32:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:32:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:32:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 14:32:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:49,057 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:32:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:49,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:49,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:49,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:32:49,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:49,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880638670] [2020-10-13 14:32:49,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:49,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:49,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311047021] [2020-10-13 14:32:49,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:49,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:49,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:49,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:49,102 INFO L87 Difference]: Start difference. First operand 24720 states and 38228 transitions. Second operand 7 states. [2020-10-13 14:32:49,373 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:32:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:58,390 INFO L93 Difference]: Finished difference Result 97490 states and 151260 transitions. [2020-10-13 14:32:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:58,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:32:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:58,482 INFO L225 Difference]: With dead ends: 97490 [2020-10-13 14:32:58,482 INFO L226 Difference]: Without dead ends: 80351 [2020-10-13 14:32:58,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80351 states. [2020-10-13 14:33:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80351 to 24637. [2020-10-13 14:33:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24637 states. [2020-10-13 14:33:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24637 states to 24637 states and 38115 transitions. [2020-10-13 14:33:01,032 INFO L78 Accepts]: Start accepts. Automaton has 24637 states and 38115 transitions. Word has length 134 [2020-10-13 14:33:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:01,033 INFO L479 AbstractCegarLoop]: Abstraction has 24637 states and 38115 transitions. [2020-10-13 14:33:01,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 24637 states and 38115 transitions. [2020-10-13 14:33:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:33:01,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:01,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:33:01,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:33:01,041 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:01,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1110836144, now seen corresponding path program 1 times [2020-10-13 14:33:01,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:01,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552333174] [2020-10-13 14:33:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:06,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:06,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:33:06,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:33:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:33:06,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:33:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 14:33:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:06,346 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:33:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:06,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:33:06,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:06,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552333174] [2020-10-13 14:33:06,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:06,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:06,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773217945] [2020-10-13 14:33:06,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:06,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:06,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:06,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:06,382 INFO L87 Difference]: Start difference. First operand 24637 states and 38115 transitions. Second operand 7 states. [2020-10-13 14:33:06,659 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:33:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:20,363 INFO L93 Difference]: Finished difference Result 129737 states and 201251 transitions. [2020-10-13 14:33:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:20,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:33:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:20,485 INFO L225 Difference]: With dead ends: 129737 [2020-10-13 14:33:20,485 INFO L226 Difference]: Without dead ends: 117987 [2020-10-13 14:33:20,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117987 states. [2020-10-13 14:33:23,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117987 to 25287. [2020-10-13 14:33:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25287 states. [2020-10-13 14:33:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25287 states to 25287 states and 38895 transitions. [2020-10-13 14:33:24,017 INFO L78 Accepts]: Start accepts. Automaton has 25287 states and 38895 transitions. Word has length 134 [2020-10-13 14:33:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:24,017 INFO L479 AbstractCegarLoop]: Abstraction has 25287 states and 38895 transitions. [2020-10-13 14:33:24,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand 25287 states and 38895 transitions. [2020-10-13 14:33:24,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 14:33:24,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:24,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:33:24,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:33:24,027 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:24,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:24,027 INFO L82 PathProgramCache]: Analyzing trace with hash 106363723, now seen corresponding path program 1 times [2020-10-13 14:33:24,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:24,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311183894] [2020-10-13 14:33:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:29,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:33:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:29,354 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:33:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:29,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311183894] [2020-10-13 14:33:29,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:29,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168110767] [2020-10-13 14:33:29,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:29,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:29,388 INFO L87 Difference]: Start difference. First operand 25287 states and 38895 transitions. Second operand 7 states. [2020-10-13 14:33:29,667 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:33:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:42,555 INFO L93 Difference]: Finished difference Result 108287 states and 167031 transitions. [2020-10-13 14:33:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:42,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-13 14:33:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:42,651 INFO L225 Difference]: With dead ends: 108287 [2020-10-13 14:33:42,652 INFO L226 Difference]: Without dead ends: 85972 [2020-10-13 14:33:42,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85972 states. [2020-10-13 14:33:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85972 to 25206. [2020-10-13 14:33:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25206 states. [2020-10-13 14:33:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25206 states to 25206 states and 38768 transitions. [2020-10-13 14:33:47,201 INFO L78 Accepts]: Start accepts. Automaton has 25206 states and 38768 transitions. Word has length 135 [2020-10-13 14:33:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:47,201 INFO L479 AbstractCegarLoop]: Abstraction has 25206 states and 38768 transitions. [2020-10-13 14:33:47,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 25206 states and 38768 transitions. [2020-10-13 14:33:47,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 14:33:47,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:47,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:33:47,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:33:47,212 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:47,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1309312326, now seen corresponding path program 1 times [2020-10-13 14:33:47,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:47,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523058283] [2020-10-13 14:33:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:33:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 14:33:52,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:52,526 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:33:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:52,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:52,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:33:52,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:52,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523058283] [2020-10-13 14:33:52,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:52,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:52,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481218721] [2020-10-13 14:33:52,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:52,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:52,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:52,562 INFO L87 Difference]: Start difference. First operand 25206 states and 38768 transitions. Second operand 7 states. [2020-10-13 14:33:52,841 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:34:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:06,657 INFO L93 Difference]: Finished difference Result 107926 states and 166456 transitions. [2020-10-13 14:34:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:06,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-13 14:34:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:06,741 INFO L225 Difference]: With dead ends: 107926 [2020-10-13 14:34:06,741 INFO L226 Difference]: Without dead ends: 85639 [2020-10-13 14:34:06,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:06,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85639 states. [2020-10-13 14:34:10,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85639 to 25121. [2020-10-13 14:34:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25121 states. [2020-10-13 14:34:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25121 states to 25121 states and 38637 transitions. [2020-10-13 14:34:10,586 INFO L78 Accepts]: Start accepts. Automaton has 25121 states and 38637 transitions. Word has length 135 [2020-10-13 14:34:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:10,586 INFO L479 AbstractCegarLoop]: Abstraction has 25121 states and 38637 transitions. [2020-10-13 14:34:10,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 25121 states and 38637 transitions. [2020-10-13 14:34:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 14:34:10,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:10,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:34:10,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:34:10,594 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:10,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1773195046, now seen corresponding path program 1 times [2020-10-13 14:34:10,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:10,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202756052] [2020-10-13 14:34:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:15,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 14:34:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:15,907 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:34:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:15,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:15,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:34:15,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:15,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202756052] [2020-10-13 14:34:15,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:15,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:15,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431951772] [2020-10-13 14:34:15,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:15,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:15,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:15,942 INFO L87 Difference]: Start difference. First operand 25121 states and 38637 transitions. Second operand 7 states. [2020-10-13 14:34:16,225 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 203