/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:15:31,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:15:31,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:15:31,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:15:31,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:15:31,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:15:31,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:15:31,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:15:31,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:15:31,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:15:31,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:15:31,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:15:31,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:15:31,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:15:31,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:15:31,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:15:31,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:15:31,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:15:31,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:15:31,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:15:31,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:15:31,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:15:31,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:15:31,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:15:31,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:15:31,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:15:31,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:15:31,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:15:31,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:15:31,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:15:31,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:15:31,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:15:31,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:15:31,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:15:31,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:15:31,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:15:31,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:15:31,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:15:31,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:15:31,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:15:31,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:15:31,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:15:31,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:15:31,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:15:31,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:15:31,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:15:31,853 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:15:31,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:15:31,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:15:31,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:15:31,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:15:31,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:15:31,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:15:31,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:15:31,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:15:31,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:15:31,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:15:31,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:15:31,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:15:31,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:15:31,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:15:31,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:15:31,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:15:31,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:15:31,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:15:31,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:15:31,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:15:31,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:15:31,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:15:31,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:15:31,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:15:31,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:15:32,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:15:32,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:15:32,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:15:32,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:15:32,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:15:32,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-13 13:15:32,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2d041ce/1da54654054a4d6ea3fdf023de0040f9/FLAGd7efa84e6 [2020-10-13 13:15:32,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:15:32,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-13 13:15:32,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2d041ce/1da54654054a4d6ea3fdf023de0040f9/FLAGd7efa84e6 [2020-10-13 13:15:33,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2d041ce/1da54654054a4d6ea3fdf023de0040f9 [2020-10-13 13:15:33,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:15:33,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:15:33,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:33,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:15:33,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:15:33,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc704b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33, skipping insertion in model container [2020-10-13 13:15:33,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:15:33,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:15:33,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:33,606 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:15:33,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:33,693 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:15:33,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33 WrapperNode [2020-10-13 13:15:33,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:33,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:15:33,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:15:33,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:15:33,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... [2020-10-13 13:15:33,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:15:33,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:15:33,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:15:33,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:15:33,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:15:33,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:15:33,826 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:15:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:15:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:15:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:15:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:15:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:15:33,827 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:15:33,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:15:33,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:15:33,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:15:34,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:15:34,649 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:15:34,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:34 BoogieIcfgContainer [2020-10-13 13:15:34,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:15:34,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:15:34,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:15:34,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:15:34,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:33" (1/3) ... [2020-10-13 13:15:34,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794ca80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:34, skipping insertion in model container [2020-10-13 13:15:34,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:33" (2/3) ... [2020-10-13 13:15:34,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794ca80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:34, skipping insertion in model container [2020-10-13 13:15:34,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:34" (3/3) ... [2020-10-13 13:15:34,666 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-13 13:15:34,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:15:34,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:15:34,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:15:34,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:15:34,724 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:15:34,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:15:34,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:15:34,725 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:15:34,725 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:15:34,725 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:15:34,725 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:15:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-13 13:15:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:15:34,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:34,760 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] [2020-10-13 13:15:34,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1364421405, now seen corresponding path program 1 times [2020-10-13 13:15:34,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:34,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072111326] [2020-10-13 13:15:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:35,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:15:35,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-13 13:15:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:15:35,831 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:35,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:35,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:15:35,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:35,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:35,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:35,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:15:35,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:15:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:36,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:15:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:36,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:36,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:15:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:36,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:36,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:36,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:36,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072111326] [2020-10-13 13:15:36,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:36,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:15:36,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103391465] [2020-10-13 13:15:36,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:15:36,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:36,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:15:36,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:15:36,139 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 6 states. [2020-10-13 13:15:37,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:37,191 INFO L93 Difference]: Finished difference Result 258 states and 411 transitions. [2020-10-13 13:15:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:15:37,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 13:15:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:37,207 INFO L225 Difference]: With dead ends: 258 [2020-10-13 13:15:37,207 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 13:15:37,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 13:15:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2020-10-13 13:15:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 13:15:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 243 transitions. [2020-10-13 13:15:37,275 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 243 transitions. Word has length 58 [2020-10-13 13:15:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:37,276 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 243 transitions. [2020-10-13 13:15:37,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:15:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 243 transitions. [2020-10-13 13:15:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:15:37,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:37,280 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] [2020-10-13 13:15:37,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:15:37,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1292034847, now seen corresponding path program 1 times [2020-10-13 13:15:37,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:37,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839125587] [2020-10-13 13:15:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:37,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:37,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:15:37,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-13 13:15:37,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:15:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:15:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,006 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:38,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:38,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:15:38,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:15:38,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:15:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:15:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:38,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:38,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:15:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:38,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:15:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:38,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839125587] [2020-10-13 13:15:38,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:38,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:15:38,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676201576] [2020-10-13 13:15:38,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:15:38,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:38,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:15:38,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:15:38,284 INFO L87 Difference]: Start difference. First operand 150 states and 243 transitions. Second operand 10 states. [2020-10-13 13:15:38,703 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:38,846 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:40,098 INFO L93 Difference]: Finished difference Result 262 states and 414 transitions. [2020-10-13 13:15:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:15:40,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 13:15:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:40,105 INFO L225 Difference]: With dead ends: 262 [2020-10-13 13:15:40,106 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 13:15:40,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:15:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 13:15:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 150. [2020-10-13 13:15:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 13:15:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2020-10-13 13:15:40,132 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 216 transitions. Word has length 58 [2020-10-13 13:15:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:40,133 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 216 transitions. [2020-10-13 13:15:40,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:15:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 216 transitions. [2020-10-13 13:15:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:15:40,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:40,136 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] [2020-10-13 13:15:40,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:15:40,136 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:40,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1402954698, now seen corresponding path program 1 times [2020-10-13 13:15:40,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:40,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045785052] [2020-10-13 13:15:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:15:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:15:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:15:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:15:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:15:45,434 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:45,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:45,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:15:45,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:45,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:15:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:15:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:45,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:45,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:15:45,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:15:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:45,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:15:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:45,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:15:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:45,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:45,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:45,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:45,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:45,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045785052] [2020-10-13 13:15:45,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:45,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:15:45,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202587282] [2020-10-13 13:15:45,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:15:45,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:15:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:45,764 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. Second operand 9 states. [2020-10-13 13:15:45,912 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:47,305 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:47,567 INFO L93 Difference]: Finished difference Result 334 states and 502 transitions. [2020-10-13 13:15:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:15:47,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 13:15:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:47,577 INFO L225 Difference]: With dead ends: 334 [2020-10-13 13:15:47,577 INFO L226 Difference]: Without dead ends: 249 [2020-10-13 13:15:47,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:15:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-13 13:15:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 220. [2020-10-13 13:15:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-13 13:15:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 320 transitions. [2020-10-13 13:15:47,610 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 320 transitions. Word has length 84 [2020-10-13 13:15:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:47,610 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 320 transitions. [2020-10-13 13:15:47,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:15:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 320 transitions. [2020-10-13 13:15:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:15:47,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:47,614 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] [2020-10-13 13:15:47,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:15:47,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash 350295045, now seen corresponding path program 1 times [2020-10-13 13:15:47,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:47,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498736418] [2020-10-13 13:15:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:52,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:15:52,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:15:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:15:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:15:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:52,911 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:52,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:52,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:52,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:52,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:15:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:15:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:53,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:53,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:15:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:53,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:53,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:53,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:15:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:53,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:53,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:53,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:53,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:15:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:53,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:53,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:53,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498736418] [2020-10-13 13:15:53,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:53,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:15:53,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61361971] [2020-10-13 13:15:53,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:15:53,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:15:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:53,161 INFO L87 Difference]: Start difference. First operand 220 states and 320 transitions. Second operand 9 states. [2020-10-13 13:15:53,317 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:54,868 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:55,069 INFO L93 Difference]: Finished difference Result 566 states and 842 transitions. [2020-10-13 13:15:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:15:55,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-13 13:15:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:55,073 INFO L225 Difference]: With dead ends: 566 [2020-10-13 13:15:55,073 INFO L226 Difference]: Without dead ends: 411 [2020-10-13 13:15:55,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:15:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-13 13:15:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 363. [2020-10-13 13:15:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-13 13:15:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 534 transitions. [2020-10-13 13:15:55,116 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 534 transitions. Word has length 86 [2020-10-13 13:15:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:55,117 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 534 transitions. [2020-10-13 13:15:55,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:15:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 534 transitions. [2020-10-13 13:15:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:15:55,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:55,119 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] [2020-10-13 13:15:55,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:15:55,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:55,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1045085748, now seen corresponding path program 1 times [2020-10-13 13:15:55,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:55,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961600639] [2020-10-13 13:15:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:55,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:16:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:16:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:16:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:16:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 13:16:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:00,360 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:00,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:16:00,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:00,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:16:00,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:16:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:16:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:00,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:16:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:16:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:00,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:00,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:16:00,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:16:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:00,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961600639] [2020-10-13 13:16:00,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:00,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:16:00,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308397365] [2020-10-13 13:16:00,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:16:00,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:16:00,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:16:00,765 INFO L87 Difference]: Start difference. First operand 363 states and 534 transitions. Second operand 13 states. [2020-10-13 13:16:00,947 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:01,322 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:01,466 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:03,300 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:03,454 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:03,668 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:06,786 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-13 13:16:08,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:08,117 INFO L93 Difference]: Finished difference Result 2543 states and 3993 transitions. [2020-10-13 13:16:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 13:16:08,118 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-13 13:16:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:08,140 INFO L225 Difference]: With dead ends: 2543 [2020-10-13 13:16:08,140 INFO L226 Difference]: Without dead ends: 2245 [2020-10-13 13:16:08,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 13:16:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-10-13 13:16:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1805. [2020-10-13 13:16:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2020-10-13 13:16:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2722 transitions. [2020-10-13 13:16:08,302 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2722 transitions. Word has length 88 [2020-10-13 13:16:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:08,303 INFO L479 AbstractCegarLoop]: Abstraction has 1805 states and 2722 transitions. [2020-10-13 13:16:08,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:16:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2722 transitions. [2020-10-13 13:16:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:16:08,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:08,306 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] [2020-10-13 13:16:08,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:16:08,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:08,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1638095605, now seen corresponding path program 1 times [2020-10-13 13:16:08,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:08,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589534987] [2020-10-13 13:16:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 13:16:13,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:16:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:16:13,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:16:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:16:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 13:16:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,510 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:13,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:13,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:13,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:16:13,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:13,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:16:13,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:16:13,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:16:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:13,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589534987] [2020-10-13 13:16:13,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:13,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:16:13,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907728581] [2020-10-13 13:16:13,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:16:13,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:13,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:16:13,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:16:13,844 INFO L87 Difference]: Start difference. First operand 1805 states and 2722 transitions. Second operand 14 states. [2020-10-13 13:16:14,056 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:16:14,531 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:14,692 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:14,856 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:16,710 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:16,917 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:16:17,085 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:16:17,277 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:16:18,654 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-13 13:16:19,808 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-13 13:16:20,857 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:21,160 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:16:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:25,195 INFO L93 Difference]: Finished difference Result 9229 states and 14453 transitions. [2020-10-13 13:16:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-13 13:16:25,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-13 13:16:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:25,244 INFO L225 Difference]: With dead ends: 9229 [2020-10-13 13:16:25,244 INFO L226 Difference]: Without dead ends: 7489 [2020-10-13 13:16:25,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1202, Invalid=4804, Unknown=0, NotChecked=0, Total=6006 [2020-10-13 13:16:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2020-10-13 13:16:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 6148. [2020-10-13 13:16:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6148 states. [2020-10-13 13:16:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9460 transitions. [2020-10-13 13:16:25,757 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9460 transitions. Word has length 89 [2020-10-13 13:16:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:25,759 INFO L479 AbstractCegarLoop]: Abstraction has 6148 states and 9460 transitions. [2020-10-13 13:16:25,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:16:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9460 transitions. [2020-10-13 13:16:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:16:25,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:25,765 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] [2020-10-13 13:16:25,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:16:25,765 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:25,766 INFO L82 PathProgramCache]: Analyzing trace with hash 75152046, now seen corresponding path program 1 times [2020-10-13 13:16:25,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:25,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123238673] [2020-10-13 13:16:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:25,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:25,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:30,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 13:16:30,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:16:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:16:30,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:16:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:16:30,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:30,977 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:30,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:30,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:31,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:16:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:16:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:31,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:31,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:31,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:31,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:16:31,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:16:31,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:16:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:16:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:31,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:31,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:31,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:31,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:16:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:31,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:31,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:31,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:31,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:31,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123238673] [2020-10-13 13:16:31,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:31,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:31,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484960703] [2020-10-13 13:16:31,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:31,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:31,202 INFO L87 Difference]: Start difference. First operand 6148 states and 9460 transitions. Second operand 8 states. [2020-10-13 13:16:31,370 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:33,694 INFO L93 Difference]: Finished difference Result 14239 states and 21974 transitions. [2020-10-13 13:16:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:16:33,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-13 13:16:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:33,756 INFO L225 Difference]: With dead ends: 14239 [2020-10-13 13:16:33,757 INFO L226 Difference]: Without dead ends: 10246 [2020-10-13 13:16:33,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:16:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10246 states. [2020-10-13 13:16:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10246 to 9084. [2020-10-13 13:16:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9084 states. [2020-10-13 13:16:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9084 states to 9084 states and 13873 transitions. [2020-10-13 13:16:34,476 INFO L78 Accepts]: Start accepts. Automaton has 9084 states and 13873 transitions. Word has length 89 [2020-10-13 13:16:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:34,476 INFO L479 AbstractCegarLoop]: Abstraction has 9084 states and 13873 transitions. [2020-10-13 13:16:34,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:16:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9084 states and 13873 transitions. [2020-10-13 13:16:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:16:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:34,479 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] [2020-10-13 13:16:34,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:16:34,480 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash 501964949, now seen corresponding path program 1 times [2020-10-13 13:16:34,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:34,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014336881] [2020-10-13 13:16:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:39,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:39,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 13:16:39,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:16:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:16:39,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:16:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:16:39,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:39,784 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:39,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:16:39,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:39,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:39,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:16:39,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:16:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:16:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:16:39,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:16:39,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:16:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:39,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:39,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:16:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:40,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:40,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:40,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 13:16:40,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:40,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:16:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:40,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:40,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:40,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:40,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014336881] [2020-10-13 13:16:40,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:40,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:40,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683050191] [2020-10-13 13:16:40,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:40,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:40,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:40,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:40,178 INFO L87 Difference]: Start difference. First operand 9084 states and 13873 transitions. Second operand 8 states. [2020-10-13 13:16:40,437 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:43,000 INFO L93 Difference]: Finished difference Result 23151 states and 35629 transitions. [2020-10-13 13:16:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:16:43,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-13 13:16:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:43,074 INFO L225 Difference]: With dead ends: 23151 [2020-10-13 13:16:43,074 INFO L226 Difference]: Without dead ends: 14157 [2020-10-13 13:16:43,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:16:43,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14157 states. [2020-10-13 13:16:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14157 to 12595. [2020-10-13 13:16:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12595 states. [2020-10-13 13:16:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12595 states to 12595 states and 19287 transitions. [2020-10-13 13:16:44,207 INFO L78 Accepts]: Start accepts. Automaton has 12595 states and 19287 transitions. Word has length 89 [2020-10-13 13:16:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:44,208 INFO L479 AbstractCegarLoop]: Abstraction has 12595 states and 19287 transitions. [2020-10-13 13:16:44,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:16:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12595 states and 19287 transitions. [2020-10-13 13:16:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:16:44,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:44,209 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] [2020-10-13 13:16:44,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:16:44,209 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1505120245, now seen corresponding path program 1 times [2020-10-13 13:16:44,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:44,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846737431] [2020-10-13 13:16:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:16:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:49,439 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:49,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:49,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:16:49,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:49,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:16:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:16:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:49,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:49,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:16:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:49,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:49,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:49,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:49,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:49,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:16:49,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:49,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:49,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846737431] [2020-10-13 13:16:49,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:49,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:49,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773061480] [2020-10-13 13:16:49,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:49,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:49,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:49,766 INFO L87 Difference]: Start difference. First operand 12595 states and 19287 transitions. Second operand 9 states. [2020-10-13 13:16:49,967 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:51,623 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:52,660 INFO L93 Difference]: Finished difference Result 36033 states and 54598 transitions. [2020-10-13 13:16:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:16:52,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:16:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:52,775 INFO L225 Difference]: With dead ends: 36033 [2020-10-13 13:16:52,775 INFO L226 Difference]: Without dead ends: 23528 [2020-10-13 13:16:52,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:16:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23528 states. [2020-10-13 13:16:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23528 to 20168. [2020-10-13 13:16:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20168 states. [2020-10-13 13:16:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20168 states to 20168 states and 30476 transitions. [2020-10-13 13:16:55,244 INFO L78 Accepts]: Start accepts. Automaton has 20168 states and 30476 transitions. Word has length 90 [2020-10-13 13:16:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:55,244 INFO L479 AbstractCegarLoop]: Abstraction has 20168 states and 30476 transitions. [2020-10-13 13:16:55,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 20168 states and 30476 transitions. [2020-10-13 13:16:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:16:55,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:55,248 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] [2020-10-13 13:16:55,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:16:55,249 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2424660, now seen corresponding path program 1 times [2020-10-13 13:16:55,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:55,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720125479] [2020-10-13 13:16:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:17:00,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:17:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,455 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:00,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:00,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:17:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:17:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:17:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:00,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:17:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:17:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:17:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:17:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:17:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:17:00,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:00,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720125479] [2020-10-13 13:17:00,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:00,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:17:00,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352626936] [2020-10-13 13:17:00,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:17:00,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:00,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:17:00,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:17:00,654 INFO L87 Difference]: Start difference. First operand 20168 states and 30476 transitions. Second operand 8 states. [2020-10-13 13:17:00,830 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:03,950 INFO L93 Difference]: Finished difference Result 45152 states and 68551 transitions. [2020-10-13 13:17:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:17:03,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-13 13:17:03,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:04,096 INFO L225 Difference]: With dead ends: 45152 [2020-10-13 13:17:04,096 INFO L226 Difference]: Without dead ends: 32365 [2020-10-13 13:17:04,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:17:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32365 states. [2020-10-13 13:17:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32365 to 29007. [2020-10-13 13:17:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29007 states. [2020-10-13 13:17:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29007 states to 29007 states and 43448 transitions. [2020-10-13 13:17:06,248 INFO L78 Accepts]: Start accepts. Automaton has 29007 states and 43448 transitions. Word has length 91 [2020-10-13 13:17:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:06,249 INFO L479 AbstractCegarLoop]: Abstraction has 29007 states and 43448 transitions. [2020-10-13 13:17:06,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:17:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 29007 states and 43448 transitions. [2020-10-13 13:17:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:17:06,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:06,250 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] [2020-10-13 13:17:06,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:17:06,251 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:06,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:06,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1672452966, now seen corresponding path program 1 times [2020-10-13 13:17:06,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:06,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415377527] [2020-10-13 13:17:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:17:11,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:17:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:17:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:17:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:17:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,435 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:17:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:17:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:11,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:11,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:17:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:17:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:17:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:17:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:11,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415377527] [2020-10-13 13:17:11,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:11,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:11,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961487402] [2020-10-13 13:17:11,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:11,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:11,666 INFO L87 Difference]: Start difference. First operand 29007 states and 43448 transitions. Second operand 10 states. [2020-10-13 13:17:12,069 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:12,521 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:13,882 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:14,053 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:19,720 INFO L93 Difference]: Finished difference Result 105197 states and 158061 transitions. [2020-10-13 13:17:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:19,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 13:17:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:20,082 INFO L225 Difference]: With dead ends: 105197 [2020-10-13 13:17:20,083 INFO L226 Difference]: Without dead ends: 76282 [2020-10-13 13:17:20,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76282 states. [2020-10-13 13:17:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76282 to 68311. [2020-10-13 13:17:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68311 states. [2020-10-13 13:17:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68311 states to 68311 states and 101518 transitions. [2020-10-13 13:17:25,284 INFO L78 Accepts]: Start accepts. Automaton has 68311 states and 101518 transitions. Word has length 92 [2020-10-13 13:17:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:25,285 INFO L479 AbstractCegarLoop]: Abstraction has 68311 states and 101518 transitions. [2020-10-13 13:17:25,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 68311 states and 101518 transitions. [2020-10-13 13:17:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:17:25,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:25,286 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] [2020-10-13 13:17:25,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:17:25,286 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1104595779, now seen corresponding path program 1 times [2020-10-13 13:17:25,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:25,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129818590] [2020-10-13 13:17:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 13:17:30,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:17:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:17:30,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:30,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:17:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:17:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,483 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:30,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:17:30,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:17:30,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:17:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:17:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:17:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:30,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:30,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:17:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:30,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:30,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:30,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:17:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:30,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129818590] [2020-10-13 13:17:30,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:30,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:17:30,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13839325] [2020-10-13 13:17:30,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:17:30,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:30,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:17:30,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:17:30,739 INFO L87 Difference]: Start difference. First operand 68311 states and 101518 transitions. Second operand 9 states. [2020-10-13 13:17:30,920 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:31,117 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:17:31,321 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:17:32,116 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2020-10-13 13:17:32,912 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:17:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:44,024 INFO L93 Difference]: Finished difference Result 216195 states and 327591 transitions. [2020-10-13 13:17:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:17:44,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-13 13:17:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:44,621 INFO L225 Difference]: With dead ends: 216195 [2020-10-13 13:17:44,622 INFO L226 Difference]: Without dead ends: 147915 [2020-10-13 13:17:44,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:17:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147915 states. [2020-10-13 13:17:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147915 to 135257. [2020-10-13 13:17:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135257 states. [2020-10-13 13:17:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135257 states to 135257 states and 198700 transitions. [2020-10-13 13:17:57,874 INFO L78 Accepts]: Start accepts. Automaton has 135257 states and 198700 transitions. Word has length 93 [2020-10-13 13:17:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:57,875 INFO L479 AbstractCegarLoop]: Abstraction has 135257 states and 198700 transitions. [2020-10-13 13:17:57,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:17:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 135257 states and 198700 transitions. [2020-10-13 13:17:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:17:57,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:57,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:57,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:17:57,877 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:57,878 INFO L82 PathProgramCache]: Analyzing trace with hash 491208997, now seen corresponding path program 1 times [2020-10-13 13:17:57,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:57,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456017493] [2020-10-13 13:17:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:57,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:02,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:18:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,050 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:03,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:03,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:18:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:18:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:18:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:18:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:18:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:18:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:18:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:18:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:18:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:03,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:03,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:18:03,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:03,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:18:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:03,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:18:03,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456017493] [2020-10-13 13:18:03,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:03,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:18:03,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209211364] [2020-10-13 13:18:03,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:18:03,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:03,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:18:03,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:18:03,220 INFO L87 Difference]: Start difference. First operand 135257 states and 198700 transitions. Second operand 7 states. [2020-10-13 13:18:03,409 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:18:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:18:10,743 INFO L93 Difference]: Finished difference Result 283263 states and 416282 transitions. [2020-10-13 13:18:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:18:10,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-13 13:18:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:11,261 INFO L225 Difference]: With dead ends: 283263 [2020-10-13 13:18:11,261 INFO L226 Difference]: Without dead ends: 148040 [2020-10-13 13:18:15,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:18:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148040 states. [2020-10-13 13:18:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148040 to 135259. [2020-10-13 13:18:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135259 states. [2020-10-13 13:18:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135259 states to 135259 states and 198702 transitions. [2020-10-13 13:18:22,089 INFO L78 Accepts]: Start accepts. Automaton has 135259 states and 198702 transitions. Word has length 94 [2020-10-13 13:18:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:22,089 INFO L479 AbstractCegarLoop]: Abstraction has 135259 states and 198702 transitions. [2020-10-13 13:18:22,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:18:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 135259 states and 198702 transitions. [2020-10-13 13:18:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 13:18:22,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:22,091 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] [2020-10-13 13:18:22,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:18:22,091 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:22,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:22,092 INFO L82 PathProgramCache]: Analyzing trace with hash -316566782, now seen corresponding path program 1 times [2020-10-13 13:18:22,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:22,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421319727] [2020-10-13 13:18:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:22,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:18:27,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:18:27,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 13:18:27,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:18:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:18:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:18:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,322 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:18:27,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:18:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:18:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:18:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:18:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:18:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:18:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:18:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:18:27,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:18:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:18:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:18:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:18:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:27,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:27,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:18:27,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:18:27,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:18:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:18:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:18:27,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421319727] [2020-10-13 13:18:27,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:27,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:18:27,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657049216] [2020-10-13 13:18:27,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:18:27,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:18:27,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:18:27,579 INFO L87 Difference]: Start difference. First operand 135259 states and 198702 transitions. Second operand 10 states. [2020-10-13 13:18:27,755 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:18:28,167 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:18:28,627 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-13 13:18:29,312 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:18:29,477 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:18:32,383 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72